I've recently noticed that since I've been raising my Magnesium which used to be in the low 1200's to the high 1100's, my mushrooms in an isolated corner of the tank were real plump and were multiplying. Now my Mag is at 1340 and the mushrooms just don't look like they used to. But on the positive end of it my zoos and palys are doing great. Go figure. I'm just gonna have to find a happy medium and see what happens in the next few weeks.