Right now the float switch in the filter section is as high as it will go, so the level in that section is at its max. If I put the float switch lower, then the roller is almost constantly on. I had to turn down the flow on my Vectra M2, I think I am running it at maybe 25-30% of its max (max flow is rated at 2000 GPH). The overflow is rated at 750-1500 GPH, so I didn't think it was an over flow problem. I am sure I am with in the range for the overflow. If anything I think that the filter fleece section cannot handle any more flow than it is right now. Trigger says the Platinum sumps are rated to 3000 GPH, but I doubt it.