Concrete Pool Scaling Issue

[rfdowd]

I have concrete pool that has had an ongoing scaling or calcification issue. The pool was unopened and not maintained for a period of 5 years. We purchased the house and opened the pool 4 years ago. When first opened, the pool had large area on the walls that extended below the water line approx 4 ft. that had a sharp mineral build up. The build up decreased significantly with the use of antiscaling agents and brushing in the first year of maintanence. The pool has been actively used and maintained since then. The scaling has not progressed in either direction since the first year. This year we have had a significant problem with algae growing in the scaling on the walls. I've super shocked the pool repeatedly and scub the walls daily, but the algae keeps returning. I use a chlorine float with 3 in tabs and shock weekly with granular chlorine. I've also tried algacide and phospate lower agent that have not helped.

I've spoken to numerous pool maintanence companies and they have all told me that I need to have the pool skim coated (at a cost of $6000-$9000).

I've just ordered K2006C testing kit and will provide the results.

Any advice or insight would be greatly appreciated.

[PoolDoc]

[PoolDoc]

Yeah, I think it can be fixed for a lot less . . . if the plaster is not too thin, or not weakly attached and subject to delaminating.

I'm pretty sure you can clean it up with a diamond grinder, like this outfit:

Bosch DC510 5-Inch Diamond Cup Grinding Wheel for Concrete
Bosch 1773AK 5-Inch Concrete Surfacing Grinder

I'm pretty sure that outfit would perform well for the heavy removal, but you'll need something flexible, too. Diamond grinding has changed so much since I bought the tools I have, that I can't advise you more than that, without doing a lot of research. I have some stiff diamond on copper on fiberglass disks that would perform very well, but those are no longer made.

[PoolDoc]

membership upgraded.