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  2. Hi Tam, Hoping the past 48 hours has seen a turn around in your morality issues. Cheers Toga
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  5. Each one of us will do things a bit differently than other people. Prevention is always better/easier than cure. In addition to what is discussed, quick changes in temperature during transfer could be another reason for these fish kills. I now suspect parasitic infection that spreads fast but I could be wrong. Stressed fish are more susceptible to parasites. Improper transportation and/or unhygienic handling at nursery may at times lead to 100% mortalities. For parasitic infections, there are several chemicals that are applied by aquaculturists by bath, such as salt, formalin, H2O2 and KMnO4. If possible, first see if you can get the fish tested at a lab.
  6. Dear Vkn, I would have started with small fish numbers or much smaller healthy fish for starters. Your starter fish looks much bigger to me. What about your plants? I bought fish with 6g/ individual. With my plant, I plant 4 tomato/ 1m2, , plant seem deficient nutrient (as picture I attach), 11 days after I plant in grow bed Dear Toga, 9% Salinity = 90,000mg/l I follow your advice, with add 2g/ 800l of each tank today Have mortality rates decreased since you started water changes ? The rate of mortality continue increase, As you see my record, the mortality continue increase, Even I stop feed fish, the belly of fish so big, some fish have different swimming pattern, sign of deficient of oxy, Hope adding salt can help fish stop die, Thank all, Tam
  7. Hi Tam and VKN, To add further clarity, freshwater nitrification bacteria have a much higher tolerance to salt than almost every species of fresh water fish and most disease bacteria. 7-9% Salinity levels are used in waste water treatment plants with zero adverse effect on the nitrification bacteria (microbe) life cycle. However, at 9% salinity, they are much less effective at nitrification. **EDIT Regarding Salinity** 9% Salinity = 90,000mg/l Remedial Recommendations of 2-3mg/l = 0.0002% - 0.0003% salinity Yes, salinity levels can and do influence plant growth immensely. Some plants simply die @2mg/l, others tolerate it but grow very poorly.. most fruiting plants hate salt. It is my view that if you do nothing and do not intervene with some sort of mitigation process, your stock losses may be significant. Have mortality rates decreased since you started water changes ? Cheers Toga
  8. It’s all good advice above and it's all true in a fish-focused aquacultural systems. However, I wouldn't do salt bath during start-up phase for several important reasons nor I would suggest water changes while your system maturation. The secret is in the microbes. We are working with a living system that regulates by itself. Microbes evolve along with the plants they sustain/interact with, meaning they too benefit from chemical levels, pH, temperature and other conditions to keep its life going. I would have started with small fish numbers or much smaller healthy fish for starters. Your starter fish looks much bigger to me. What about your plants?
  9. I would think it would be more correctly called hydrogenated water. I found where someone was putting a magnesium rod in a testube and allowing the gas to bubble in the water to get pressurized hydrogen gas. After doing to experiments and purchasing a titration kit that test dissolved hydrogen gas in water I found I could just add a magnesium rod to a empty soda bottle( I use a diet mountain dew bottle) and add malic acid 1/2 teaspoon to 500 ml/ 16.9 oz of water. After it bubbles for a few minutes, I shake the powder till duly dissolved and put it in the fridge for a few hours. When I open a bottle it runs around 500 ppm dissolved hydrogen. I try to drink this down quickly to get the bubbles int he body.
  10. Hi Tam try this You can also use the search function (on the top right) just type in the word salt cheers
  11. Hi Toga, Are they 3 separated tanks each with their own separated grow beds ? Yes, they are Do not transfer anything between the tanks or grow beds I used only one net for three tanks. Maintaining farm hygiene is paramount. Thank for your advice I had never done any hygiene - Sterilize your nets (soak in very strong salt water works OK) The best way when using net for all three tankI note your pH has risen since you started.a) What is the pH of your source water before you add it to your fish tanks ?b) Where is this source water from ? (ie: A dam, river, well, bore, city tap water, collected rain water)c) Do you store your water before use ? and if so - What is the material of the container ? (ie: plastic, concrete, earth dam, rubber liner)c) Did you pH test your sand before purchase/use ? a) PH is 7.8 before I add it to my fish tank b) Well in ground (used to water plant, plant was grown in soil), collect water from rain c) No. I just pump the water from well to every tank d) I did not test PH of sand I have just test it, PH is 7.4 Disease Mitigation - (This is why adding salt is good - search this forum) Can you help me find position of adding salt way? I can not find it
  12. Hi Tam, Good work keeping records, they are key to good success when you understand them well. Take time to study, understand, compare seasons, success and failures of your records. I note you have NH4 record as well as NO2/3. Due to the very low readings in your results, and the short time period from setup, suggests to me that your total "N" cycle is very shallow, very low... meaning the bacteria culture is very small and not very strong. The cycle values that I indicated above, are perhaps higher than what is actually required to establish healthy strong bacteria. Below is a quick google image of what I mean. Take your records and make a similar chart and compare them... Do you see the difference ? Can you see what I refer to as being a "very shallow cycle" from your records ? I note you make reference to "Tank 1", "Tank 2" and "Tank 3". Are these 3 tanks joined together to the same grow bed/s ? ... OR Are they 3 separated tanks each with their own separated grow beds ? The answer to the above is important to many questions about future management... but it is also unimportant to my next point of note: Disease Mitigation - (This is why adding salt is good - search this forum) Toxic water, No/low/unhealthy bacteria, burnt/sick/dying fish, very high water temps... All of these dramatically increase a) Disease Potential, b) Disease Verility and c) Disease Transmission Maintaining farm hygiene is paramount. - Sterilize your nets (soak in very strong salt water works OK) **EDIT** Followed by drying in the sun - Wash hands and arms when working in different tanks - Do not transfer anything between the tanks or grow beds - Remove and dispose of mortalities immediately and regularly One last comment for this response - I note your pH has risen since you started. a) What is the pH of your source water before you add it to your fish tanks ? b) Where is this source water from ? (ie: A dam, river, well, bore, city tap water, collected rain water) c) Do you store your water before use ? and if so - What is the material of the container ? (ie: plastic, concrete, earth dam, rubber liner) c) Did you pH test your sand before purchase/use ? Cheers Toga
  13. Dear Ande, I'm so sorry for my misunderstanding, This is first time I reply in forum. Tam
  14. Hi Tam When replying to posts, you do not use the report post button. That's for reporting spam abuse etc. , and can only be seen or read by moderators. I will copy your responses (in the 2 reports) to vkn & Toga here: Tam Submitted 5 hours ago Dear VKN, What temperature are you at? Do you have more turbidity due to the Silica dust? The temperature is 30 Celsius. I don't see turbidity from silicate dust so much. If it is not a lot, once essential microbes are established, the fish deaths rarely happen. What have you done to jump start the nitrification process? This picture show the way I used to raise bacteria. I use feed as source of ammoniac, bacteria I add in flour form. I add fish after nitrogen cycle is ok (nitrite is slow down 0.1; nitrate has increased more than 40 mg/l) on 7-Aug, Thank for your advice! Tam Submitted 4 hours ago Dear Toga, Thank for your help, Tomorrow I will follow your instruction, I will change water, add salt batch for cure fish, stop feeding, As I post to reply report to Vkn, I had create the nitrogen cycle before adding fish on 7-Aug, I willing to hear your help on my beginning small system, Thank Tam cheers
  15. Hi Tam, I do not feel the SiO2 is a major issue here. I believe the culprit of your issues is NTS (as I call it)... New Tank Syndrome... and this is why I believe this to be the case: You added fish in just 3 days. Even if you did jump start the "N" cycle... and even if your water is 32C, the nitrosomonas and nitrobactors would still require 8+ days to cycle from NH3/20mg NO2/50 NO3/150 to being a safe, cultured bacteria colony. I note you did not supply ammonia readings. Being the initiating and most toxic water parameter of the nitrogen cycle, in my view, is the highest needed water test and ought be essential in your test kit bag. Being in Vietnam, I assume your water temps are very warm this time of year... perhaps 26-30 Celsius. You also state a pH of 7.8 and O2 of 8mg/l Ammonia presents itself in 3 different forms, according to the pH. At 7.8pH, ammonia presents as NH3-N, the most toxic form. Additionally, and unfortunately, the toxicity of NH3-N increases exponentially as the water temps rise above 20C. New, un-established bacteria are more susceptible to NH3-N toxicity than many fish... Thus, the system/s are in bio-overload from week #1. Mortality due to "N" cycle & NH3-N has several very common, visual signs. Due to burning from MH3-N, visual signs can be as minor fraying of some or one of the fins .. though to severe bleeding into the rays, skin, gills and eyes. Additionally - all external soft tissues, mucus membranes, eyes, gills and anus may show the same degree of visual variance, from mild burning to severe cellular bleeding. Also additionally - NH3-N mortality in established bio-systems presents slightly differently than it does in newly setup systems. In established aquaculture systems, NH3-N moralities effect a very high % of the total stock, it does so very rapidly... and all carcasses present with equal visual appearance. In new systems, the week and stressed get burnt - the healthier show resistance.... after a day or three has passed, those initial week burnt fish now have visual bleeding, burning swelling, fungus and bacterial issues... while those fish with initial resistance now begin to succumb and initial burning and bleeding begins. Thus within 5-10 days you can have a situation where moralities present in many different manners, and different stages of toxicity exposure... exactly like you photo. Some (most ?) fish appear to have very little visual signs (visually non-advanced), where as the main fish in picture shows every sign I have mentioned (visually highly advanced). So, what is a suggested avenue of mitigation ? 1. Water changes only reduce the concentration - not the toxicity. You need to lower the toxicity levels by lowering your pH closer to 7.0, and continue water changes. 2. As counter productive as it may sound, the addition of salt to the level of 2-3mg/l has huge benefits... far too many to add to this response. (search this forum) 3. STOP FEEDING THE FISH FOR 4 DAYS !!! Mortality during this period is 100% NOT due to starvation... it is 100% due to everything I have mentioned thus far. 4. Do Not Feed the Fish ! Correct - do not feed the fish until moralities stop. (especially for new systems) In an uncycled system, feeding your fish when the water is already toxic is equal to adding petrol to a fire. Sorry I didnt have more time to be more detailed in my response. Cheers Toga
  16. Hi Tam, Fish kills are a tragedy.. seen similar fish deaths in many new systems. Do not necessarily mean it is due to SiO2.. it could be the weak and stressed ones dying out. What temperature are you at? Do you have more turbidity due to the Silica dust? If it is not a lot, once essential microbes are established, the fish deaths rarely happen. What have you done to jump start the nitrification process?
  17. Hi Ande, I waiting for some advice, My fish was continuing have death, After I replace a half of water, check SiO2 again, it still 3 mg/l, Please see picture below for clearly observe I don't know what I will do? I would like to receive your help. Thank! Tam
  18. Hi Tam Welcome to APN/HQ Hopefully @vkn @Aufin or some other member with hands on IAVS experience will see your post and chime in cheers
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  20. Hi Rav and all, I'm glad to see both of your health issues have improved. I started the keto diet about a year ago. Every morning since I started I have a bulletproof coffee. I initially went on a 8 week plan and stuck to it reasonably rigidtly apart from the odd special occasion which I indulged and had normal food for dinner. Before those dinners, I did drink a keto substitute (salts) drink before the meal which helped keep the ketones up when the carb intake increased. Long story short, I lost 18kgs within a couple of months and I did not do any extra exersize. Where I live, men are encouraged to get "mens tests" every year (a set of blood tests which measures your colestorals, blood sugars PSA's and a few extra tests which I can not remember. I did one of them when I started this diet and had good reason to do another 4 months after and found my already good sugars were still good and my aready good overall colestoral which was very good had dropped so I am encouraged that a high fat, medium protein and low carb diet when done well, helps my colestoral. Having done various diets before, including the juice diet I mentioned a couple of years ago, I found this diet to be reasonably easy. I still struggle with my addictive nature like eating way too many cashews, but have not had a coke since the day I started the diet. I may of had 1 packet of potato chips overall but still lo-ove my coffee, in particular, caps....I have stopped using cows milk and use a particular almond milk to make or order caps when going out. This has also helped in the keeping the weight under control thing. I would also say though, if you are thinking about this diet then commit to doing it all the time or I do not think it will work, you do not want to get the yo yo effect when your body is constantly adjusting to a fat diet then a carb diet. Another thing is, I found I needed to drastically increase my water intake to well over 2 litres a day I'm just saying these things just to give information about my experience. One thing I would warn about , is not to go against your doctors advise. If they advise not to do the diet then do not.My G.P is non plussed about it, he neither encourages or discourages it. I want to investigate and research CBD oil (cannibis oil without the THC componant in it) as my daughter suffers depression amonst other things and see if it actually works. I have asked my uncle who was a surgeon before he retired and is very knowlegable about medical things about it and his answer to me is there is research around which says it may be helpful for certain things or words to that effect.I have a friend who has MND who uses it and it seems to help, I have another friend who has a particular internal arthritis, I can't remember the name who is usung a government sanctioned CBD oil and he swears by it. In this state in this country, the trick is finding a G.P. (doctor who is prepared to help you jump the hurdles the government, medical profession and big Pharma have put in the way) I've yet to get into that as it is time consuming and I have my own personal issues to sort out first. I'm very interested in your ERW water could you elaborate more please? Cheers.
  21. Dear all, I had started new IAVS system. Fish tank is 800l, plant area tank is 400l, I had 3 system like that I use the silicate sand, After 3 days after I add fishs in tank, fish still have die - 1 fish die / day/ tank. Every tank I add 40 fish/tank; 6g/1 fish; I feed fish with 6g of fish feed/ tank Now in tank1 have 3 fish die, tank2 have 3 fish die, tank3 have 2 fish die. I make test with water today, with all information like: NO2 0,1 mg/l; NO3 1-->10mg/l; SiO2 3mg/l; PH 7,8; O2 8mg/l I think I not washing sand enough before, so SiO2 so high, it make fish die Please help me, is this the cause, how I can determine this Thank, Tam
  22. I'm hoping you do Wilsonmj but I'm not seeing many teachers contribute except maybe one. I plan on doing some actual how to presentations soon on the Facebook page as how to build a couple types of bio filters, mechanical filters etc. and incorporating them into a fish tank via a small pump and gravity. Basicially how to build a system from scratch which I've done here years ago. Stay tuned. I set up four systems on my own dime for four high schools and got severely burned by one. The school auctioned off all my equipment after the teacher quit without telling me. When I tried to find out what the heck was going on they stonewalled me. Only one out of four really appreciated my help. Keep in mind I only expected the fish at the end of the school year which I didn't think was too much to ask as I supplied the fish, feed, and equipment. Never ever will I do the again. No good deed goes unpunished.
  23. Brian, In case I missed it how did your pumps become unplugged?
  24. You don't do anything by halves do you, Brian. I've had fish kills before but nothing as painful as you've suffered. Discussion forums have declined...certainly all of the aquaponics ones...and the proclivities of Facebook users are probably to blame. There is nothing about Facebook that is better than the discussion forum...except perhaps the 24/7 availability of users...and I'm far from certain that's actually an advantage. The truth is that many of those that you encounter on Facebook are people that you would rather never deal with. There is no regard for facts or evidence. You can watch page after page of absolute garbage get trotted out and the person who asked the question is left none the wiser. Facebook sites are a pig to retrieve information from...the Search capabilities being close to useless. Contrary to the trend, I opened up another forum...www.havemoreforless.com...but, while I've put a lot of work into it, I'm uncertain about what to do with it. One thing I do know is that I'm not interested in replicating what I did here at APN. I had thought of a private club sort of space...where I host discussions for a handful of friends and collaborators...but it's still unresolved. The question of how to deal with content is a difficult one...and I can empathise with your dilemma about what to do with your stories. Regardless of what happens, I wish you better luck than you experienced this week.
  25. so in may, i had my air pumps come unplugged and i lost all the catfish and bluegill i had left... which was around 600 lbs of fish.. you know.. over a quarter ton of fish growing in a suburban back yard ,, about 70 catfish from 4-7lbs and 300ish bluegill and red eared sunfish averaging 1 lb (.75-1.3 lbs) so 600 lbs is honestly a conservative estimate, I am not gonna dig up my raw pictures to repost but if you scroll through this multipost instagram post you can see all the death and destruction and the mound i built to hot compost the fish I think forums in general are maybe not the prefered method of knowledge transfer by the mass population anymore.. which is disappointing because facebook and instagram and youtube arent collaborative in nature and they are very difficult to browse through history of an author.. and follow a person's build for 6 years or more like i have done on backyard aquaponics and apn and are crucial to my learning and how i got to where i am today in aquaponics.. for now i dont plan to to keep this thread updated but i am posting semi regularly on that instagram pictures of my build.. if someone sees something they want to talk about we can still talk about it here. I have abandoned backyard aquaponics forum .. noone reads anything anymore, its just nonsense and its like reading aquaponics forum that perpetually stuck in aquaponics 101 because anyone with the maturity to read whole build thread or use the search function have left that place for dead like i have. I have for a long time planned to start posting content as a youtube creator.. It was never meant to be future career or second income , just a way to share what i have learned and what i have built in a more visual and personalized setting.. i am still planning to do this even though i feel that youtube content creation has passed as a fad as well, but i still find it really easy to convey ideas to people i am talking with in real life by pasting a video.. so it still has value to me for instance, last summer i made this unlisted walkaround video of my fish system for optimal fish food (my fish food supplier) because they asked for pictures, and since i have pasted t to a dozen people i know (irl) because they were asking about my system. I plan for my youtube content to be more instructional and focus mostly on "how much food can someone grow in a suburban backyard". I am still learning. i had a setback on my aquaculture but i feel like i have a lot i can share in that space and now i am really focusing more on growing the vegetable and sharing what i am learning in that side of my aquaponics journey and i am working on some additional projects. Some of it is in the home automation, sensor, monitoring and automated response space catered to gardening. All of which i currently plan to open source (if it works and has value to people). And i have another project that is somewhat related but i am not ready to announce any details about it at this time. anyway, consider that my state of the union speech. I am not dead, i am still working on my dream when i have time.. and we can still talk about here but i am not gonna try to instigate conversations with pictures and updates anymore.. so if you wanna know whats going on, just ask.. peace. brian aquaponic cowboy
  26. Ain't it just amazing what modern doctors can't/won't tell us about some of the holistic remedies. I don't know anything, yet, about ERW water, but I have spent quite a bit of time researching colloidal silver, oregano oil, and cannabis oils and tinctures to name a few. Doctors aren't very interested in suggesting something "home-brewed". Glad you found something that helps.
  27. So in my absence from here , I have been researching like a madman hydrogen water and ketogenic diet. A little back story, my wife has severe autoimmune diseases mainly rheumatoid arthritis and ankylosing spondylitis. Her feet used to look like balloons. When I saw the post about ERW water I went on a tangent reading research articles. I discovered it was the antioxidant effect of hydrogen gas and it acting as a cell mediator that appeared to be the causative agent. The machine to make the hydrogen water is very expensive. I came across some ideas of making it with a magnesium rod. So I ordered magnesium rods and after sterilizing them. I took a soda bottle and adding malic acid and filled it up with water. We had started the ketogenic diet, kind of haphazardly as we had done other carb restriction diets before. When we added the hydrogen water, we saw increased weight loss. I was prediabetic, but my sugar levels dropped to normal levels without medication. with the combo of the hydrogen water and keto diet we both loss about 30 lbs. Best of all the pain levels that my wife had dropped significanlty. I was having to push her around in a wheel chair and was resigned that I was going to have to have a ramp or lift installed. Her feet are now normal sized and she is wearing shoes she could not fit in for years. The most wonderful thing is we went on a mile hike last month. This was not something we could even conceive of as being a realistic possibility until we combined hydrogen water with Keto. dieting. If your experiencing irritable bowel syndrome, diabetes type 2, arthritis, or other autoimmune disorder. I would encourage you to look into this. I only regret we didn't do this years ago.
  28. I never had a problem with smell with an indoor IAVS system.
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