I just bought a house in Brea, CA in Sept 2011, and the pool is a 18,000 gallon plaster pool with a spa that cascades into the pool.
The previous owner says they re-plastered 6 years ago, and the plaster does look good (no cracks or chips) expect for the discoloration.
The stains and discoloration seem to be very imbedded in the plaster.
I tried emptying the spa and acid washing it, and it doesnt change a thing.
It looks exactly the same. No amount of scrubing with muriatic acid touches the stains.
I'm tempted to paint the pool because the discoloration looks ugly and makes the pool look dirty.
I would really like to install pebbletec but I wont have a budget for that for a few years,
since we just got done doing alot of improvements inside the house.
If you wanted to improve the pools looks for a few years and ultimately plan on installing pebbletec down the road,
what would you do in the mean time?
Below are a few images of the pool. Notice the blue plaster with grey blotches of discoloration mostly on the steps and ledges.
Is there something other then acid washing that I could try to remove the stains?