Hi i have 2 tanks, a coldwater tank that ive had for years and the water is always crystal clear. My newer tank of 10 months is a tropical frehwater tank and the water is always green. What am i doing wrong?
Algae may be the problem as the others have already said, my friend has this problem and we decided to cover up the tank for a few days and we did 3 50% water changes on different days, do you fish always eat all the food u give them?? Because if they don't this just sits at the bottom rotting