arthoz

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About arthoz

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  • Birthday 06/13/82
  1. Thanks Gary. Denggue fever is really a scary desease at this moment so we're more on renovating our garden to remove any threat of mosquito breeding there. A good friend of mine died several year ago from denggue, it was really a shock. We even gave away our two feet long koi fishes to friends since we need to remove the fish tank. In some pvc tanks there's a space in the wrinkle of the rim for water to collect. Even on a thin film of water those larvae could easily be present...damn mosquitoes. So now I'm back to the drawing board. Need to study more on mosquitoes breeding behaviour and how to prevent them. It'll be a year or two before I could put up a new system, hopefully. Also there's a lot of articles circulating about mosquitoes trap...they are all lies, the real trap are mosquitoes larvae trap as shown in the article in the link below: http://news.google.com/newspapers?nid=1309&dat=19990719&id=DfdOAAAAIBAJ&sjid=qBQEAAAAIBAJ&pg=6834,702804 http://www.ttsh.com.sg/about-us/newsroom/news/article.aspx?id=3274 Hope the aquaponics community could pool our ideas to create a mosquitoes larvae trap for our system. It could really save lives.
  2. Thanks, this going to be an interesting challenge. Found out it's also hard to find any square hollow pvc pipe at the local hardware. Either look for it at the main cities or order it at the port. Not sure if coconut fibers would also wok, we have a lot of them here. I've been born here and it's first time I knew they've been using it to stuff furniture, matresses and car dashboard.
  3. I've seen the hanging method use by http://brightagrotech.com/home.html since it's useful for urban setting. Recently I have dismantled our aquaponics system at home due to avoid hazard of aedes mosquito breeding there because of the water in the growbed. There have been several death from denggue fever in my neighbourhood and I don't want to contribute to the risk of death to others. Although health inspector have checked my system and found no mosquito larvae still there's a lot of place the larvae could hide. The hanging system of by brightagrotech to me seems like a better option since the water flows cascading inside the tower and there's not much tanks with water collecting inside. Living in Malaysia it's sometimes near impossible to find certain components at my hometown. For example Leca are not available in any shops and although I could travel to the capital to look for it the price is very expensive. So I need help or advice to look for this component which is a PET(Polyethylene terephthalate) fibre. I want to try making a similar growbed like the agrotech system as shown in the video link below: The closest picture I could find online is this: I'm not sure if I need to order the fibres custom made from a recycling factory. I could but it'll take time and money. But if there's already a product maybe like sponges or scrubs available in market, I could just use that. Really need help on this, leca is out of the question and normal aggregates pose as structural hazard to my parents, had a storm earlier this year and and half of the aquaponic roof frames were broken off. Thanks in advance.
  4. True, true, true...my thirsty bamboo and I and my loveable mother have nothing for you but gratitude for putting forth this idea. The only nagging thing is that I can't see any of the pics posted here...maybe there's something wrong with the forum (btw nice forum makeover, I like the greenish hue) or maybe my internet explorer needed an upgrade download or two...nevermind...maybe it'll sort out later.... Anyone got any advice how I could make the growbed box? We got serious termite problems here though I did read somewhere that they cover the plywood with fiberglass...CAN WE DO THAT? Sorry for my ignorance, I'm partially clueless with farming so fiberglassing is an absolute mystery to me... And how should I design the plumbing if I want the water to circulate with an aquaponics system...so sorry if someone have posted on this subject already, haven't got time to read the whole thread...should I let it go in a continuous flow (won't the soil get soggy?) or just simple flood and drain or a timer? So much to learn and so little time...I hope I could learn more before I have to go outstation to a place void of any internet connection....
  5. Thanks for the wicking bed idea, although I was incapable to implement it as a growbed but it was useful as a sort of life support for my plants. I buried a plastic container filled with rocks and covered with coconut fibers. Clearly the plants are looking more luxuriant and they no longer wither when I forgot to water them in the evening.
  6. Thanks for the info on purging the fish. We've had a lot of myth regarding to fish purging mostly due to trial and error method. I guess fish purging haven't become much of a scientific method where locals have a lot of their own traditional ways...
  7. I'm sorry for jumping to conclusion, Arach. It's not what I read about tilapia being sensitive but from what I and many people have experienced here at home. Probably the situation might vary regarding to location. Recently here in Temerloh we have been experiencing shortage of tilapia since a lot of tilapia fingerlings reared in cage in the river died due to something in the water (All of them actually and they've stopped stocking tilapia for a while). I heard it was a parasite or something related to the weather, not really clear on that. Anyway, I wasn't referring to their mortality rate. Sorry if I made people confused. The thing I was trying to explain is that their "taste" when you cook them is "sensitive to water quality". People here could tell where you've reared the fish and what you've feed them by merely tasting them and this relates directly to the price those fishes would fetch. It is also a grave concern to restaurants and hotels that serve fish. We've had a lot of problems with people trying a lot of tricks to mask the taste of the fish like putting them in a river cage for a month or so to clear their system or something. I think there's some government or maybe religious regulation concerning fish rearing and feeding which I'm not familiar with. It doesn't only happened to tilapia but also with patin, catfish, etc. A big issue that could either rake in a lot of profit or ruin your business altogether.
  8. By the way Ravnis, I use corals and shells for my biofilters so the pH might be balanced around neutral. No help for that unless I change my biofilter medium. As for the other, I don't think I can find any. Here in Malaysia people are too focused on dirt digging since the land is too fertile. I've read a british engineer's memoir while he was building the railroad in Malaya (what Malaysia was known back then) in the 1900's. They had driven pilings into the humus for a hundred feet before it was obstructed by a log--an ancient log!!! So you can imagine the level of fertility of the earth here. The point is, there's no way I could find any materials relating to aquaponics or even hydroponics unless they border on stuff used in the plumbings. Yes, some Malaysian might flame me for not mentioning a few entrepreneurs that sells those stuff on the net or in some place I might never pass by in my travels...it's the availability that matters. I'm an old fashion consumer--I need to hold and appraised the merchandise before I decide whether to buy it or not. Though I might contradict the fact that people still use chemical fertilizer here. Why? Because fact is, extensive farming exhaust the earth and without any effort at composting, chemical fertilizer are the best option. Talking about fertilizer, there are already a few rivers in Johor (a state in Malaysia) that water are undrinkable due to ammonia contaminant because of excessive use of chemical...well, it's something for us to think about....
  9. Oh Dave, it's the gluey stuff that makes me crazy for it;)...slice it up and fried with chili and minced ancovies...oh my mouth is watering and that was yesterday. For lunch today I had them with scrambled eggs and fried golden only the cook made them a little bit too salty for my taste. Be sure to pick them up before they harden. By the way I've read in wikipedia that people did try to ground their seeds into coffee...not sure how it'll taste. Well, haven't much to worry since mine had the same growth as yours, Dave and we're planting lots more since my grandmother wants them for salad. Earlier this month I had tried to plant some okra the conventional way a.k.a. by digging the ground. It took a whole week squatting with a small hand hoe tilling the earth and removing rocks and concrete fragments. Then raising the bed and making the drains for watering. Did tried to experiment with wicking bed but it didn't go well since the neighbour dog dug them out. From what I've seen it's been a month and the okra had only been growing well around six inches!!! Sure, I'm a lousy farmer. I don't till the ground too well and didn't even fertilize it properly (though the neighbourhood cats do their business there, so no lack of organic fertilizer)...but my knees and ankles are throbbing after each squatting session and I sometimes in my hurry forgot to water the plants. Anyway compare to my aquaponics system, rhetorically speaking, I use ten times less effort (and ten times extra fat to my weight). Yes, building the whole aquaponics set is hard, took me a week to do it on my own (not including planning and researching) and a year to tune it to balance everything. But I get vegetable and fish and I only need to drop a seed into the grow medium and within two or three weeks I get to pick my favourite okras. I don't think I'll ever repeat that cycle of digging dirt, well maybe I would with an engine powered plough, but never with a hoe. And I'm going to do it at the orchard where my dogs would tear to ribbons any dogs who'd dare lay paws on my garden bed!!! P.s. My other favourite food is tempeh but I'm still searching for soya beans seeds at the moment. Nothing taste better than a homemade and homegrown food.
  10. Could you elaborate on this and give some example? I think I'm a little confused. Does it mean that it is easier to maintain suitable nutrient and dissolved oxygen level and remove solid from the system or does it mean that it'll take less time and effort to manage water quality?
  11. Thanks for all the help. I was planning on going commercial in a few years and I was a bit worried about suspended solid in a large system. I've visited a friend's canvas fish tank a month ago and it seems that his fishes are doing fine in muddy water with some water lily or something floating on the water to deal with ammonia issue though it's no where near to aquaponics (they had never even heard of aquaponics so I was being polite not to mention it). He had stocked around 6000-9000 catfish in four 10X4 feet (just an estimation of the dimension, had a fuzzy memory on this) canvas tank at 3 feet deep water. The only problem he had was from fish skin disease caused by rainwater from a recent storm and death when the bigger catfish are pecking at the smaller one. But all in all the loss was quite minimal and expected. The only worry I got is for tilapia. They are very sensitive to water quality and even their taste could be affected by it. I think I've read in someone's blog the concept of "small is beautiful" or something. Does placing large number of fish in several smaller systems to be safer and more manageable in terms of water quality and disease management than hoarding them all in a single large system? Or is it just unnecessary and redundant? I guess Gary's advise on bird nylon netting would be a cost effective solution. Besides, in long term, expensive and complicated device might be hard and costly to maintain or replace. I would be using rural workers and they might accidentally damage sensitive equipment. I had a species of pegaga planted in my growbed and their growth is quite surprising. The roots had grown so much that it pushed up the medium basket out of the tank. The point here, I think those roots must have have acted similar to the nylon netting that Gary mentioned because the water is crystal clear except after feeding time when they get a bit murky. I only needed to trim the roots once in a while and suck out the sediment with a pump. Kangkong roots works the same in my observation. I had slice a chunk of the roots on one occasion after it had clogged the system and the thing looked just like a block of sponge when left out to dry. Someone threw it away before I could test it as a growbed media.
  12. I could let solid particles to settle into sludge inside the clarifier and regularly removed them but how do I capture suspended solid? Does a clarifier is also effective to capture suspended solid? Or should I install other type of filter like fine netting (or bird netting like they use in virgin island university)? Would allowing water to flow through a duckweed tank could also capture suspended solid or does it only work like a clarifier and collects only sedimenting solids? I know solids is bad but how bad could suspended solid be? Anyone got a good suggestion for this problem or am I just worrying too much?
  13. I don't know wheter to laugh or cry... Politician are a funny species after all. You just can make them see reason even if it bit their legs... Sometimes the decision made are just to spite opposition to show people who's in power and sometimes they just had access to bad advisors (experts, scientist, sycophant)... Well, hope you'll get better luck in the future...
  14. Sorry for the late reply, been busy lately... Well I guess it's a rule of the thumb and a big no-no here to spray your plants with water at noon or at any time the sun at its hottest since those droplets of water instead of nourishing your plants, becomes hundreds of tiny magnifier that intensify sunlight and sunheat. Think of it like you are lying under the sun and someone uses a magnifier glass to focus sunlight on your skin, I guess the plants would feel the same too. Maybe, I'm not sure about it but I have my own suspicion that oil does the same and a layer of oil on your plants could cause it to heat up but for the case of an organic pesticide, I don't think you should use too much oil, just enough to help spread the solution onto the plants and on those pesky bugs. You don't have to spray your plants until it's covered with a layer of glistening oil. To think of it, the organic pesticide I've concocted doesn't even feel oily at all. A spoonfull to a few litres should be enough, to be sure there's a lot of info on the net of the type of mixture.
  15. Soap water with oil and spray them evenly on your plants but make sure you use mineral or vegetable oil and use soap which is safe, not the kind with an antiseptic solution, it might endanger the fish. Though our local botanist told us to use laundry detergent. By the way, try to keep ants away from your plants. Ants and aphids are like shepherd to a sheep. Ants actually protect aphids and harvest food (sort of like nectar) from aphids. I even heard that ants spread aphids...not sure if it's true...ants, wonderful insects aren't they?