I use 3" tablets, HTH Ultra in a floater for our pool and even with it fully closed I have high chlorine levels. The pool is covered most of the week as we use it mostly on the weekends and it is indoor so it does not get sunlight. Ph is 7.5, CYA is 30, TA is 100 and tends to run low on hardness scale. I will now switch from the Ultra tabs since they have softener in them. FC runs 5+ on my 6 way test kit. Should I switch to granules?
The other problem I ran into was I had to add pH plus since it dropped to 6.8 and since my FC was high I got cloudy water. I changed my filter and figure the filter will clear it up. I have the pool uncovered now to ' breathe' and hopefully burn off some chlorine. The kids never complain about the chemicals until last week they did get really dry skin and one complained of sore eyes, hence the bump in pH.