Hello, i am new to TFP. 4 year old pool owner in south TX. I have few patches of calcium deposit on my pebble tec floor and walls. I reached out to a pool service company and inquired about their services and they want to do a hot start to remove the deposits. Is it safe to do a hot start for a 4 year old pool and would all that acid etch too much of my pebble tec? I read about bead blasting, which that company offers for tile cleaning. Can bead blasting be used on pebble tec plaster? Thank you in advance!