Hey, my tank has been cycling for about 2.5 weeks. I noticed a few days ago that there was a heavy outbreak of diatoms, im guessing? Its brown, and covers spots on my sand, and on my live rock. I started out with pre mixed RO Salt water from my LFS, and have topped it off with, reg. RO water also from LFS due to evaporation. My questions are, how long does this last? are there ways to get rid of this brown algae? or is it just a waiting game? Also what is the best sign to tell weather the nitrogen cycle is complete for a FOWLR tank? If i want to add corals, what are the best conditions to keep them. Thanks alot