new 90

I’m starting a 90 gal mixed tank which I have decided to practice full eradication instead of the management techniques. I’ve run tanks in the past using the dump and pray method and while I generally got lucky I want the peace of mind this time. The tank is a 90gal I got off Facebook...

Hi all, new to the hobby. Ove got a 30Gallpn tank with approx 17kgs of live rock and live carab sand. I'm running a protein skimmer, fluval 207 cannister and salinity is at 1.024 at 28 degrees. But I've just noticed this smooth looking white growth on some rocks.