| Re: Inclinations of a no-filter media system. I may be late here but another concern I would have in regards to a completely unfiltered tank without water changes are the hormones that fish release. The build up of these hormones will stunt animals growth and effect their health. As far as I know, these aren't absorbed by marco algae. Water changes or chemical filtration are required to deal with any sort of allopathy in a tank.
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Michelle
Just because something CAN be done, it doesn't mean that it SHOULD be done!
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