Fiberglass pool? Alk= 190? Hardness=160? Nothing to worry about now. Seriously, it's not going to cause you any problems in the short term, so ignore it for now and fix the other stuff first.

I would STRONGLY recommend against using Tri-Chlor puck given a pH of 6.9. It's asking for trouble. Now is the time to rely on bleach and aeration.

Meanwhile, if your pump sizzles, something is definitely not right and needs to be addressed.

Carl