Long shot here but today I was looking at my tank because I've been fighting cyano lately and finally noticing change. But while I was staring at a rock with acro growing on it I noticed a red mist come from being the rock work and quickly dissipate. Because of work I had neglected things a little and nitrates did creep up which I'm almost back where I need to be since doing 10% water changes every other day. But this red puff that blink and you'll miss it got me curious. Anyone knows what could cause it?



