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yahoo2 last won the day on April 27 2017

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    Eyre Peninsula, South Oz

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    Engineering, Ecology, living off the land

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  1. Sorry Rav, I was using YOU as in " all the people involved in the conversation", I dont see glomalin as a product that can be added, it is grown in the soil as part of a process, the researchers describe its function as a sticky string bag that turns into a waxy bag over time, this makes soil very granular, so you have billions of tough little packages that resist things like nutrient leeching, water logging, etc . I have dug up an illustration of the process of getting an arbuscular fungi to join with a plants hair root. This is step one in forming Glomalin. And here is essentially the
  2. I think you are missing the context of this Ravnis. To get large amounts of Glomalin you need to cultivate the Arbuscular mycorrhizal fungi that makes it, on the roots of the plants, in the growing medium, in situ. That involves meeting a few (5) basic criteria in the growing system. I think its doable, but you need to be prepared for some rather large dents in your pride, going down this rabbit hole pretty much smashes every conventional preconception/idea on how soil works, and plants and nutrient cycling for that matter.
  3. you ask some hard questions Cecil. Have you got the gear to measure Delta P and O2 % ? Back in the old days when I was part of a research team out in the field we had machines that measured total gas pressure, but then we had to take a separate barometer pressure reading to calculate the differential pressure (delta P) . the barometers were fragile and unreliable and all the calculations were done with a pencil and paper. we were studying chronic disease in fish, our measurements were not always good enough to show a link with supersaturated water at lower gas pressure levels and dis
  4. it looks like cross site scripting. they used to attack login panels that returned users data as part of the error message in the ol days. This one looks like it is trying to install some java once you press OK.
  5. you might have a colony of microbes that are removing an oxygen ion from the nitrate and forming nitrite. that is a more common path in nature, for example bacteria and e-coli do it in the mouth and gut of animals (including us) because it is a reduction reaction it requires very little energy. Maybe these microbes are killed from a ph swing or perhaps a metal in the fish food is reacting with any free nitric acid in the water when the fish are introduced back in the system. Reduction to nitrite also happens with the decay or burning of plant material or dead critters on its way to gassin
  6. I forgot to mention that the lactic acid producing bacteria lives on the skin of the vegetable, super cleaned veg is not going to ferment easily, the population will be to low to build up easily and out compete others microbes. I have been told it is best seen in the white powdery look that you can see on red cabbage. I am lazy, for vinegar pickling I run jars and lids through the dishwasher till my benches are full, then sanitize them in the oven while I bottle batches.
  7. you could try a salt fermented pickle. your gear needs to be clean for this but not airtight Beks Backyard cucumber glut the grape leaves give them crunch or bite. NOTE. there is a typo on the page the brine solution is not correct 8% brine is the full strength version (very salty) 80 grams per litre 4% is the half strength version (slower ferment) 40 grams per litre
  8. Modified after Powers, M . C., 1953, Journal of Sedimentary Petrology, v. 23, p. 118 Hi, Hope this helps get a picture in your mind the top row is cube shaped sand from quartz or granite. the bottom row is from rock that forms shards or slivers the three columns very angular, angular and sub angular are all sharp sand. very angular is so sharp it will draw blood or wear your fingerprints away. angular is what I use for potting mix if I can get it. Look at the two middle columns, sub angular is used for concrete, it needs to flow when it is poured and worked but only a little
  9. I wouldn't put the fish back in just yet. It's not going to be a case of rip the plants out and its gone. (assuming this is what it is, I still favor gary's theory of periods of low oxygen from sediment.) all of the products that are produced from these plants are listed as category 2 /chronic toxicity code H411 what that means is that they are listed as chronically toxic to fish in the 1ppm to 10 ppm range and they dont biodegrade easily over time, that means they can accumulate in the water. The only way to reduce the levels in the tank is with a series of water changes over time. pe
  10. Hi neighbor, has your vendor got any sand that is sharper than that for comparison? Sand that is used for making concrete or potting mix or seed raising mix. if you rub it between your finger and thumb like a pinch of salt it feels "grippy" like rock salt or sugar crystals. I think playground sand is the same as builders sand. the sand particles have no edges or corners, they have been worn away. and it has a small amount of silt or clay in it. mortar sand is the same stuff as builders sand after the clay is washed out.
  11. fish out of water this is only a transcript of the original TV story, doesn't do it justice but I know the iView video is blocked to overseas interwebbers. there is a lot of potential for education and motivation and links with other resources community ed
  12. Apologies, i read this and must have skipped over your reply after this that mentioned the separator.
  13. in my experience it is more likely that this is a " the last straw that broke the camels back" situation. I am only saying that because where livestock is concerned it is rare for just one thing to kill something. They are usually already struggling from other issues. where are the fish waste solids? if you are not removing them and they are not in the bottom of the fish tank, they must be somewhere in the system. I guess it will be in the growbeds or the bottom of the raft tank and some of the churned up fines could be hanging in the water column. some sludge or a dead fish laying in
  14. http://aquaponicsnation.com/forums/topic/9175-5-gallon-radial-flow-settler-dual-outlet/ I think this is close to the latest thinking on filtration here, it reduces the flow to the radial flow filter and keeps it small and compact as it is only removing solids from the fish tank. the rest of the flow goes to the moving bed or netting filter.
  15. What I am trying to say is high levels of soluble nitrogen will make the plants keep the fungal population low and the plant will only have access to the nutrients it can physically reach with its roots. That will work provided we are supplying a constantly increasing supply of balanced soluble nutrition as the plants grow. If on the other-hand we use a staggered planting the first crop will have low mycorrhizal fungi (MF) but the second crop of plants should be exposed to lower nitrate levels and start to breed up the colonies (provided we are not sowing brassica's) once it is functioning th
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