55 gal newbie
New Member
i have a 55 gal tank 2 power heads and a tetra tec filter for a 100 gal tank with built in heater capsul,crushed coral,about 10 lbs live rcok for now,2 damsel's and a yellow tang ,everyon is happy and the water test fine ,but i am getting a brown coloring on all my crushed coral,glass, and temp gauge,it looks like algea but brown, the tank has been up for almost 3months