I am using Ultra bleach to chlorinate my pool. However, I still seem to have a problem keeping the level up on a daily basis. I get full sun on the pool. I have begun using some chlorine tablets to help keep the levels up. Is this OK? or am I not doing something right. My pool is approx 20000 gal. Gunite. I'm not sure what other information is needed to give appropriate advice. I love being able to save cost and keep a safe pool.