White dull scale above water line.

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sparty921

sparty921

Member
Dec 27, 2021
22
Little Elm, TX
Pool Size
15000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-20
I have a fiberglass pool, only 2 to 3 years old and it has become very dull and chalky looking above the water line. I performed a calcium removal treatment last October which required the water level to be higher.
Now the water level has returned to normal and above the water line up to the top looks horrible and seems to be getting worse. Any ideas what this is, cause, and how to remove?
We (me and my pool guy), are brushing, using abrasive scrub pads, and spray on cleaners. Nothing seems to work and a new pool should have the shiny blue finish still intact. thx
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Yeah, some of us seem to have drawn a bad card when it comes to gelcoats. :( No good answer I'm afraid. I wouldn't exhaust yourself with specialty chemical products ($$$) or costly manhours of elbow grease scrubbing or even sanding. It will probably just go back to the chalky look I'm afraid.

Here's my saga.

Fiberglass Discoloration (Faded & Chalky) - My Story

DISCLAIMER The following is a dialog of my own personal experience. Any processes used, chemically or otherwise, were performed strictly on my own without any recommendations from Trouble Free Pools. FUTURE POSTING I am trying to keep this thread streamlined with just my own progress for all...
www.troublefreepool.com www.troublefreepool.com
 
Thanks. Not what I wanted to hear but I will keep trying. I am just wondering having the pool so full during the Calcium removal treatment caused deposits on the walls. I was adding granular TA increaser everyday to get the levels back up and NOW I read always dilute in water first before adding directly to fiberglass pools or it can cause calcium buildup on walls. Dammit! Where does this end?
 
You would have to be adding large quantities of baking soda at once to make that happen.
 

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At those levels of TA, you add a lot of acid followed by baking soda. The TA hamster wheel. Pool store.
 
Yeah, I don’t know about all of that, I was following directions after a calcium removal treatment to get TA restored and stable. Added a cup every day. I think this stuff is just baking soda
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