I shall make it short and sweet. 2 parts of the question: LR in the sump I was advised by my LFS to put a piece of LR onto 1 of the chamber in the sump. I understood his point of view, because this particular chamber is empty, so why not for additional Biological filtration. Considering we...

Hello TRT! I'm sure this is an academic question, but - I have a batch of ASW for a WC mixing - it's been mixing for over a day now in a bucket with a powerhead & heater. My question is whether I can let it keep mixing another day or two. I have some macro coming for my display tank and I'll...