[permaculture] Aquaponics: artificial?
g.parlow at gmx.at
Sun Jan 5 11:47:10 EST 2014
> That's amazing Georg. It would be interesting to see pictures of your
> duckweed pond, pool or wetland.
Hi Lawrence - see https://dl.dropboxusercontent.com/u/30599070/AP/IMG_0218.JPG
and https://dl.dropboxusercontent.com/u/30599070/AP/IMG_0258.JPG -
it is not easy to see, all of my 7 sump tanks are covered with duck
weed - it's the blue things under the growbeds.
> that purpose). Could you describe your BSF and crawfish systems? Is
> cold water required for crawfish production?
well, as I said, my BSF system didn't work - it is a blue 200 gallon
barrel laid on it's side, with a lid cut into the top side, a little
pipe with a faucet on the bottom (to harvest the compost tea), and
some 40mm pipes cut lengthwise leaning in the compost to act as
ladders so the larvae can self-harvest by climbing out on them and
then dropping into a container unfer the end of the pipe - ut this is
the part that didn't work. I had some larvae allright (to little, most
of them were dead by the time the arrived at my place via mail), and
they transformed lots of compost, but I never harvested any larvae. I
will report on my new layout as soon as I have a working model - and I
am confident, I got in touch with a lady growing BSF for food, and
will get together with her to inprove my model according to her
Crawfush system not yet exisiting. It is planned to have a simple,
rather shallow trough with some decaying plant matter in it - the
water flow goes into this and then via overflow on to the fish tank -
any escapee is munched, and ever now and then I just scoop some out
with a spagetthi sieve and throw them in with the fish. I am also
thinking of growing a bigger crawfish - maybe the common yabby, Cherax
destructor, in the DWC bed under the plants. This would be mainly for
food, and if they propagate too profusely, feeding the small to the
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