I setup a 55 gallon drum a few days ago, found a sump pump that claims to be aquarium safe, now I can age dechlorinate and preheat the water in advance, I have used it for two water changes, the fish and I seem to like it better than using hot and cold water strait out of the tap. My question is would it be ok to use a brass control valve on the fill line, for now I've been kinking the hose to go from tank to tank.
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