Hello all--I have a cast iron --Trap that runs along the basement wall--Its U shapped with two 4 inch cleanouts plugs on it--My problem is--I noticed a small leak last night on my basement floor--and found that the pipe has a small hole right at the U therest of the pipe is fine--My question is--Can i go to ********* and get some type of a patch kit or some kind of a fiberglass repair-such as the ones they use on OIL TANKS that leak.. Right now i have Silicone adhesive over the small hole and its working 100% no problems--I dont trust that tho--I want a better patch! Why the hole is there is another question--The pipe is old--and doesnt have any other areas that need fixing--I think when i added Acid to the pool through the pipe--It did something.. Thanks for any help!! Have a great day!! MARK