10 year old pool has to be drained to remove high CYA. While pulling down, I was acid cleaning the spa waterfall into the pool and noticed that the cleaning removed the brown film that is uniformly on the pebble tec and 1/2 wat up the waterline tiles. The color is carribean blue and finish should be grey rather than brown.
Waiting for a price from by local pool company to wash it but another company close by wants $700 (without seeing it to determine how much work it is) which seems way too high as it will be drained and water washed so just need to do a quick rinse and neutralization.
If the other bid comes back in the same price range, I'm considering doing it myself (using proper PPE, respirator, etc. as well as the plaster brite acid additive that thickens and helps with a more consistent application.
What do folks think? Is this something an experienced handyman that has worked around chemical in a refinery his whole life can handle?