Hello, I have a wet/dry filter under my 225gn fresh water tank. The whole set up is less than 6 mos old. I'm noticing an accumulation of "scum" brown muck at the bottom of my sump box and around the pump itself. The problem is the filter is basically at ground level and I don't have siphon suction to get in there witha hose to clear the muck. I'm asking for your suggestions.