craigandy
Reefing newb
hi am new to reefing had a 55gal tank for my birthday had it up and runing for 4 weeks now i think the cycling has finished now but not sure salinity 1.025 ammonia 0 nitrite 0 nitrate 20 ph 8.0 temp 80 have 1 clown 2 small damselfish when do i do my first water change all so have a lot of brown algae is that nornal