[MatthewR]

Ok, my tank has been running for about month now, I have alot of brown algae, I clean the glass about once very 3 days, and leave the back alone. I have heard never clean the back glass part, is this true? and I have a bunch of live rock in my tank, there was alot of purple coralline already on it, I got it from a friend, but it seems to been dieing? The purple is losing its color little bit, by little bit, I am about to do a water change, I have not done one yet. I have a 75G and going to change 20-25 G out. Is this brown algae going to start turning green soon? and then hopefully move on to red or purple? I have some MH lights with some blue lights on the side of it. Any help as to the brown algae thing would help. and How high will the nitrates go during or after the cycle. Mine are high from what I think. Somewhere are 10-15 on the color chart. I hope the water change will brings this all back down.