hi. i don't know if you remember my post about a week ago about my new setup, but i but seem to be having a brown algea problem. it is on the cc and rocks. i checked everything and everything is 0 (nitrate, nitrite, ammonia, phosphate), pH is 8.4, and my salinity is about 1.021 (probably going to bring this up a bit). could i not have enough water movement? or would it be from using a new tank? i did take out a lot of the cc, that i will change to sand when i have enough $$$. i'm a little stumped, please help. thanks again