Thanks for your help. I will definitely get the test kit to make sure the CYA level is correct. (it should be at or above 80 for SWCG right?) . The test numbers i posted was from the local pool store, is it typical that they are not reliable? I have been to two different pool stores and they always seem to give me conflicting advice. One says keep the CYA at 80 , the other one says 30 is fine????

Thanks for your help.

Anders73