Tracy,
I'll try to talk you through it on the next video. As for the solar, it is running half of the electric load. It might be able to do more if I add a few more batteries for extra storage.
As for costs, that depends as well. The solar panels are around 50 cents per watt, the charge controller is around 300 dollars, the inverter was around 400 dollars, and the cabling and other items are around another 350 dollars.
SB,
The first tank is the solids collection tank. It is filled via gravity. As far as the pumping goes, after the third tank is filled by gravity, the airlift return moves the water back into the habitat tanks, and the process continues.
I posted a picture or two earlier in the thread showing the new airlift return system. If you have any questions, ask away. I'll be glad to help.
