brown algae

I have recently had the emergence of brown algae on my sandbed that has coincided with some other inconsistencies in my 180. All within the past month, I have had: Emergence of Diatoms, mostly on sandbed. darker in some areas, non existent where there is no light (under rock/coral overhangs...

Day 17 of cycle. Tank has a lot of brown algae which I know is supposed to happen. I think I just need to hear it from someone other than the voice in my head. LOL Also, I've read so many differing opinions on cleaner crews I'd love to get y'alls opinion on how many, types and when to add...