Gregcoyote
Aquarium Advice Addict
It can only grow if there are nutrients in the water...period. Are you over feeding? as I believe that is a likely culprit. I use a separate algae scrubber to "strip" the water of any available nutrients, as the algae grows in the superior environment of the scrubber rather than the tank. Another mistake is not physically removing algae as it is released back into the tank when cleaning. But in the end, the algae has to have something to use to grow.