Ok so just finished filling a brand new plaster pool (diamond brite exposed aggregate finish)this morning. We did an acid wash before filling then added a ton of acid after filling at the direction of the plasterer. Like 12 gal in a 16k gal pool.
Testing ph, it's lower than 6.2 using the TFP kit. (YELLOW!) and testing TA the solution turned red before I even added any of the 2nd reagent. What does the latter mean?
Thanks for the hand holding.