System b

That could be built most anywhereThese small systems could be built either indoors or out. Catfish, carp, and tilapia system are better indoors. A garage or small greenhouse would be good. And would also provide a good site for mounting solar panels if needed.

The systems we will describe require a floor space of 168 sq. Ft. And operates with a continuous pumping at a rate of 18.5 gal/minute (or about 1110 gal./hr ) The filter is of the submerged gravel type. The sedimentation basin is suitable for keeping all species, and we will describe how to adapt it to the needs of each later.

The fish tank for this system is 4 feet wide, 4 feet deep and 8 feet long filled 12 inches from the top it holds 720 gal.
The sedimentation tanks for this system is two plastic drums. The drums are filled with bird or fish netting to slow the flow.
A 2 inch siphon brings water from the fish tank to the first drum, another 2 inch siphon brings water to the second drum has two Rio 2500 pumps.
The Rio 2500 pumps 782 gallon per hour one pump returns the water to the fish tank through a fountainhead. The other pump takes to the Grow beds/filters.

This system could be put in a small greengouse like the one found HERE

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