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Originally Posted by mellow  Thanks for the pictures, and diagram Smithson. The venturi drain is a very nice idea. Don't want the vegies, although very nice set up. Their filtering capacity is very nice, but it needs a lot of room. Would also increase the amount of labour needed.
The venturi drain is something which I will try and incorporate in future doings as my wife's fish farm evolves. But in a tank, I would still like to have a bottom drain, for obvious reasons. tsicar brought up aeration. I would like to tap other peoples idea about this. I am planning to use a Supercharger, whose air will be distributed via a manifold, delivered with air stones throughout the system. The system is of the recirculating type, with 51 tanks each holding 1 cu M of water. |
mellow, why not rather use your supercharger to both aerate and pump your water at the same time? look up info on "airlift systems".
your airstones are not going to be an efficient way to do it.
profit margin is low, and you have to keep your costs down.
there is an interesting section in that link i posted, where it describes a home made system like this on a farm in zambia. they used a turbocharger from a truck. you might get some ideas there.