i did take another ph reading and in another part of pool its still high but not as high as far as what is needed to get back i just wonder if it could be that i have my return more upward as i did 2 weeks ago i that case i was trying to get more water displacement and ripples effect instead of really no surface water movement in the lower setting i do run my pump on low all the time but since the water is and has stay crystale clear i will run more test later before i do anything its worked all this way dont know why it would change will get back with ya when i do another compleate test this evening, thx