Check out this episode of the suburban aquaponics series to see the addition of a new fish tank. I had one more barrel left from my original Craigslist find and though it would make a perfect addition. I am getting close to the addition of some "real" fish into the system and needed a separate place for them to hang out away from the gold fish. I will be moving the goldfish out the an outdoor setup in the spring but for now they will be staying in the system. I think I have found a good supplier of tilapia at a fair price and I am hoping to get them to breed once established so I will not have to buy them again. This will be an exciting time over the next couple of months!
The solids lifting overflow is a standard and common design among aquaponics hobbyists. It consists of a pvc tee with one pipe going tot he bottom of the tank to collect the water and solids and another pipe going to the top of the tank to prevent any siphon from forming if water drains from the system ( a leak). The water outlet in this case just goes to the primary tank and then gets lifting out to the swirl filter.
2" Bulkhead Adapter 1 1/2" Bulkhead Adapter