I'm not overstocked and I don't have a fish waste issue in my tank. I have a very powerful filter and I clean my gravel properly. I do have a lot of sunlight everywhere in my home. When I first set up the tank I had it exposed to too much direct sunlight. I have recently purchased a "blinder" to surround it and reduce the light and reduced the number of hours that I am lighting the tank to about 9 hours. Unfortunately, my municipal water is sourced from Lake Erie (full of algae) and the processing that is done to it doesn't get all of the algae out. I have been in places in the area where you can see a bloom even on things like leaky faucets.
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