BryanCaruso
New member
So I am making up water right now for a water change. Every two weeks I do water change. Here is the question I have a sponge in my sump a.r.t. I usually rinse it out ever day in tank water. But doing so drops my salinity over the course of the two weeks. Would it be a bad practice to reserve some water that I am taking out only to clean the sponge and if so would stagnant water or even circulated water do more harm then good. Would the bacteria die off if left in a bucket. I hope this makes sense but I get a ton of crap out of this sponge everyday and I know they can build up nitrates even though mine are very low I want to keep it that way