After about 6 months of having a tank with goldfish (2 large-ish ornamental ones, two filters, an over the side one with mechanical, biological and chemical filtration, and the box filter with the fluff and the ammonia/carbon pellets), I am having a bad algae problem.
They don’t get overfed, although I haven’t been using the chemicals as frequently now, haven’t been to the pet store. I forgot what they were, though, it’s a combo two pack of chemicals. 😦 Could this be why there is too much algae? Is there some sort of chemical imbalance? Is it the change in temperature, my home is warmer now?
Any help would be appreciated.