We just purchased a home with a pool in terrible shape....couldn't see 6 inches. We drained it and acid washed it (had it done by a not completely competant pool guy). He scrubbed the bottom of the pool, which is nice and white. The sides are still pea-green (he didn't use the gel muratic acid). The calcium build-up on the tiles is pretty thick. I used a pumice stone to clean them....I used ONE stone for TWO 6" tiles and about 15 minutes of elbow grease. Ok, I don't mind the elbow grease, but the pumice stones are about $3.00 appiece....hmmmm, that's about $1,000 worth of pumice. So I have two questions:
1) any better way to clean the calcium deposits?
2) what's the best way to clean the pea-green stain?
when a acid-wash is done there is never any promise the pool plaster will look new or even alot better. The main reason is no one ever knows how deep the stains have gone into the plaster. When acid-washing plaster it only takes a thin layer off of the plaster. The green you see on the side walls is probably copper staining which happens from bad chemical balance & water hardness/metals in water.
you can have your pool tile "bead blasted" to take off calcium buildup on your tile. Normally in my area So-Cal they charge $4 a foot with 100ft minimum. It does not scratch tile like a pumice stone can.