I am a desert dweller with a 20,000 gallon in-ground plaster pool. I have a Pentair IntelliFlo 2 VST pump and a Pentair CCP 520 cartridge filter. I use a Zodiac Baracuda G3 pool cleaner. Next to my pool I have a 80 foot pine tree that is compelled to drop pine cones and pine needles in the shallow end. Many tree huggers in my neighborhood have begged me to not cut it down but by next year it will be gone. I am joining this site to get information from the experienced pool owners on best practices for maintaining my water chemistry.