I'm filtering a 38 gallon tank containing 2 angels(p.scalare) around 25 cardinal tetras, a bristlenose pleco, and a green phantom pleco with an aq70 filter. It is doing the job just fine, water is clean and parameters in check. However, the problem is that I like to use sunken leaf litter and the leaves on the left side where the filter is located are whirling around and don't want to stay put due to suction and outflow from the filter. This leaves the leaves all clustered to the right side of the tank, but i prefer them to spread out over the surface rather than in one area. So would reducing the flow on the filter to about half be detrimental to the fish and the filtration in your opinions?