My pool is the style that has pump, skimmer and filter on side of pool wall. It's not doing it's job. I get an accumulation of dirt and dead bugs on pool floor and surface. The only style vacuum that can be used is a venturi style and all that does is stir the water, causing hazy water and add too much more water to the pool. I do not know what pump I need to clear the 4600 gallon pool. What "size" pump is appropriate? Can this pool be easily changed over to another stronger pump? Chem levels are good. Pool is up and running for 10 days, running pump 24/7, testing daily with k-2006, full all day sun in the desert. I rinse the filter daily when I test.