I just used the HTH drops kit. Tonight, if I plan on waking before the sun, I will do the chlorine test. However, the drops kit tested the same as the strips have been testing, but we'll see. Here are todays results. These are after a good rain this morning as well.

Chlorine - 5ppm
pH - 7.2
TA - 240ppm
TH - 370ppm
CYA - <30ppm (the black dot did disappear before the tube overflowed but it was above the 30 mark)

So, it seems alot needs fixing. I'm sure with our high TA and TH, mixing with the cal-hypo hasn't been good. Please advise on what products to use intstead and the next step. I will report the chlorine ASAP.

We are running the filter 24/7 except unplugging when it rains. I'm not sure if the pressure rises. How can you tell? We have seen a cartride "collapse", but not frequently. When we clean the filters, they are yellowish. The usual dirt, mosquitos, etc. cleans off with a sometimes yellowish grime in the slats.

Thanks.