Re: Calcium deposits?
Hi Larry,
I was hoping to see someone else respond to this so they could better explain the actual chemicals that are in your deposits...there's an explanation for what you're seeing...efflourescence???
Anyway, I have the same deposits that form underneath my rock waterfall and seem to come down the grout lines, although they do exist on the tile, as well. A dilute solution of muriatic acid, about 1 part muriatic acid to 4-5 parts water sprayed onto the surface and then brushed with a hand brush seems to do the trick for me. The stuff will fizz and bubble on the surface as it's clearing up the deposits. Easy to rinse off with pool water right after working in an area, too. When you're done, you can dump the excess solution (shouldn't be much) into the pool where it will work to lower your pH. When working with even a dilute mixture of muriatic acid, I wear rubber gloves and eye protection...quite the site in the pool .
I've only had my pool 3 months, SWCG about 1 month, and it seems as if I have fewer deposits if I really keep an eye on my pH. My pool's happy at 7.5. When my pool was first filled and the pH was over 8.2, the deposits built up right away, within that first week. Even at 7.8 or just below, the deposits came up fairly quickly. Now, at 7.5, it's several weeks before I feel I have to clean them off.
Sandy
15,600 gallon, screened 15x30 IG plaster sport pool with 6x8 tanning area, Aquarite SWCG, Hayward cartridge filter, Polaris 280 cleaner
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