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Ok. I was saying the floc was what is causing your filter to clog. But I guess that is unrelated. Good luck.

There it is. When using floc, filter should be in recirculate and vacuumed to waste. Frankly, floc is a "when all else has failed" product to me. In 25 years, I have used it twice. Both times following wildfires in the area, as nothing else would get rid of the smoke. (Or whatever it was, I am...

I am pretty sure that is a plaster pool, and I suspect you are going to find a crack under it.

Yes, but they are not likely to see the same damage that metal or de grids would.

Yep. It would only be an issue if you were adding large amounts all at once, and then it would take many years to see any damage. But it can be the difference between 10 years or 15 in a heat exchanger.

Mixing is necessary! The risk with your method is not to the plaster but to the pump, filter, and especially heater from pulling higher than normal concentrations through the equipment. But with as little as you use, I suspect you are ok there.

I have seen it many times. High chlorine levels and high ph (which liquid chlorine has) bring dissolved metals out of solution causing staining. It is not really a one shot deal, but occurs over time. Ascorbic acid is tough to use around the main drain, so it often results in an acid wash. But...

It all depends on the overall circulation in your pool, but it can discolor and deteriorate liners and stain plaster. I always walk around the pool pouring slowly as I go and avoiding splashing by hunching over like quasimodo. But pouring in front of a return will spread it around and mix it in...