Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
I have run a reverse under gravel filter system, and it might be a little bit helpful, but enough force to keep the debris suspended until the filter can remove it takes a lot of pumping. I would usually run a power head or two down the UGF uptubes, but debris would still settle in the gravel. I tried with a much larger pump and the gravel was sort of lifting and falling it was so strong. That much force was enough to blow the debris up into the water column, and I then did a water change.
The wastes that settle on the substrate of a planted tank become fertilizer. I do not remove this valuable material from my tanks.