We have recently gotten a small pool. We’ve had it up a week now. It used 1" clorine tablets. We put the first one in, and let it stay a few days. It did disolve, but when we put the next one in, I noticed the pool walls felt slimy. I checked the clorine, and it didn’t register. I went and got a clorinator and put 3, 1" tablets floating in the pool with the one in the filter. After 2 days, it’s getting slimier, and still doesn’t register. The clorine hasn’t melted yet, and it is new.
The slimy feel is probably from not having enough chlorine. You may need to use more tabs or supplement with a shock dosage to help get the chlorine back up.