So I have a spry bar on my 220 tank, it's at the surface about an inch under water opposite side of overflow would I get better water exchange if I put it on the bottom of the tank pointing up? Or is it ok on top? To me it just seems like I'm filtering the same clean water because my overflow collects from the top and the water enters the tank at the top and it's warm water to boot so it sits on top or is there more circulation going on then I think
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