I'm cycling a 65 gallon tank with a tiny (2 inch) clown trigger and am already seeing the golden/brown diatoms/algae at week 2. I started it off with tap water, thinking I was going to change out the entire aquarium many times over with r/o, before removing the single fish and introducing more delicate animals. I added phos-zorb to the sump (right at the protein skimmer's dump) which seems only to have made the skimmer no longer foam. I'd like to get a nice growth of coraline algae going over the course of a few months and then make the switch. Any suggestion appreciated.