First attempt of 55 gal aquaponics.

[Milo]

I started my tank at the beginning of March, and around the 12th of March I added the plants and fish. I added them the same day and the tank is on a timer set for 15 on 15 off. Using R.O. water and hydro clay balls for the medium in the tank. I started with three Koi and 12 feeder fish. One feeder died the first night and a week or so later 2 of the Koi died, I did a water change because the Nitrites were very high. It took another week for the last Koi to die. I added two normal size gold fish and five more feeders. They have grown and are staying well in the tank.

I think the herbs are growing pretty well considering of the problems that I've had with the fish.

Do you all think 16 feeders and 2 bigger goldfish will be sufficient for this system? I am not sure of how many gallons of water I have, but I figure it should be close to 18-20 gallons.