To bio-wheel or not to bio-wheel??

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Yeah I am curious myself. You probably got rid of your filter pads and bags, then just placed some sand in there probably? Then some macro algae? I just dont know if what I said make sense since the grains of sand may end up going back out in a sand storm....or even worse get stuck in the blades.

So I am definitely curious. I am always up for cool DIY's
 
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