1) I bought my house with the pool and chlorine tablets were already here and I don't know how old they are. The problem is that I have put many tablets in and tested the water but still not getting into the levels that are needed for safety. Is there a chance that the tablets are so old that they are basically useless and it really doing anything?
2) with the pool just being opened for the summer. I notice that there are patches of dirt on the floor. When vacuuming the patches come up and then circulate into the water . I have vacuumed it a couple of times but once I stop vacuuming the dirt seems to settle again.
Any suggestions on the above two problems?