My Test Kit is arriving in the mail today and I need to SLAM the pool. Green and cloudy, I cannot see the floor of the pool. (12,000 gallons, 3.5 feet deep, Pentar SD40 Sand filter). The SLAM guide says to brush and vaccum every day. Do I vaccum on the filter setting or the waste setting? Is the point of vaccuming to remove large debris or small green filmy particles. I don't like vaccuming to waste cause it loses too much water but I also don't like to vacuum very fine particles into the filter because I feel like it just shoots back into the pool.