Thanks man, let us know what you decide on to help your slime problem. Increased flow along with chemical media and/or a natural solution like an ats or refugium are both viable ways to correct and control nutrient issues. In no way is one method more correct then the other, just different. Most people on here would be appalled that I use a canister filter and an HOB on a reef tank (o and I don't have a sump). But it works for me, so find what works best for you and stick with it, consistency matters above all else! Also, during water changes I would vacuum out as much slime as you can and stir the top layer of the sand bed. You can use the slime as a form of nutrient export for the time being.