Thanks so much. Just checked Amazon and looks like the test kit is still being processed and estimated delivered 6/9 and filters 6/10. Boy are they slow. That sucks. Skipped dichlor last night and this morning OTO =between 3and 5 so 4 i guess and pH= 7.4. Looks like the pH is kid of stable? will recheck OTO tonight. I do have a tree half over the pool and the debris is a big pain in the patootie but, luckily I'm getting it clean enough everyday to not have a swamp. :O). We are getting lots of use so getting our moneys worth :O) thanks again.