I have a 55 gallon aquarium. Ammonia, nitrates, nitrates and PH level are perfect. It was a fully cycled tank three months ago. My family moved it about eight hours away and set it up again. It's been an ongoing battle since... the filters are clogged with a pale yellow substance. We literally go through a filter a day. We can't tell what the problem is. My mother suggested it is algae, but we're not sure how to address that... it was by a window in my old place, it's by a window in my new place.