Would Chlorine gas off that quickly? I have thought about letting the mains enter my tank with a venturi to help the gas off but did not know it would be that fast?
I am using a ball valve which is fed off the mains through a large carbon koi pond prefilter and then I have a dosing pump which feeds dechlorinator in when the ball valve drops - I am dosing the dechlorinator at the level that the bottle suggests removes chloramine.