That is actually the glass cleaner.
I had another question regarding feeding. My fish do not like to come up and eat at the same spot which consequently means that I scatter food all over the aquarium (over feed). I currently run a FX6, Fluval 406, and an AquClear 110 and I still have to clean my filters more than I need to. Should I quit spoiling them and feed in one spot until they learn that they will get food there or no where? They are so territorial that they do not want to leave their spot.
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