Adjusting Calcium Hardness?

hedley_lamarr

Member
Sep 1, 2020
10
Winter Garden, Florida
Pool Size
6880
Surface
Plaster
Hey everyone,

I have my own test kit (results below) but take a water sample to the pool store when I need to get more chemicals for comparison. They called out the calcium hardness being off, but said that since it's a new pool, I shouldn't worry about CH until the pool is a year old (pool finished and was filled end of February). This seemed wrong, and I couldn't find anything online supporting their claim, but wanted to get advice from the experts before adjusting anything there. The pool has a Pebble Tec finish.

FC = 5.0
CC = 0
CYA = 70
CH = 150
TA = 50
pH = 7.2
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
43,643
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Recommended Levels

You need to raise your CH to the range listed in the link above.
Also, you need to raise your FC level. A CYA of 70 for a non-SWCG pool is high.
Be ware of the Mineral Cartridge. It will eventually stain your pool surfaces.
 
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hedley_lamarr

Member
Sep 1, 2020
10
Winter Garden, Florida
Pool Size
6880
Surface
Plaster
Thanks for the quick response. Definitely will work on raising the CH.

I know the CYA is on the high side, but being in Florida, small pool, rain, etc. it tends to fluctuate a bit. I typically raise the FC before the weekends when the pool will be getting heavy use.

Thanks!
 
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