| I made a goldfish tank out of a cast iron clawfoot tub this spring. I used the tub drain as the intake for the pump. Basically you cannot see any plumbing or filters. The water goes down the tub drain and is returned to the faucet so it looks like a normal tub filling with water (except for the fish).
Iinstalled a standard tub drain fitting into the tub drain and slid a piece of vinyl tubing over the tub drain and secured it with a hose clamp. My pump infeed is the same diameter so I just put it on the other end of they vinyl tubing. If your pump has a different input size you can use standard plumbing fittings to go larger or smaller in size. You can plumb in a canister style filter on the output side of the pump and then from the filter to the tub's faucet. |