- Jul 15, 2023
- 29
- Pool Size
- 14772
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Truclear / Ei
Hello! I’m looking for direction on how to rid our pool of what we presume to be calcium flakes. They started showing up around 6/19/24 after salt was added so I first thought the flakes were undissolved salt. I’ve been reading a lot, but unsure of what advice to take as everyone’s pools and water are different, so I figured I’d share my info and see if someone can help.
Our 15k gallon pool is new (first swim was 3/2024), fiberglass, with waterline tile, a Jandy SWG and a Jandy heater/chiller. We used the heater a bit in March and April, not much at all (in South Louisiana), and have used the chiller the past few weeks about two hours a day when the weather was 100F. We also have 3 water features. A 24” sheer and 2 scuppers, which are on 24/7.
I test the water weekly using a K-2006 kit and take the water to our pool store monthly, with perfect results in JUL and AUG. Here are the results from my testing today:
pH: 8
TA: 80
FC: 2
CH: 30
Salt: 3450
CYA: 50
I add 2 cups muriatic acid weekly, it brings pH down to 7.5-7.7 and by the time I test the following week it’s at 8 again. I added 2 cups after today’s test. I also add 4oz metal out weekly. I’ll also be adding stabilizer tomorrow.
Our pool builder, who is also our pool store, said that we shouldn’t worry about the CH with a fiberglass pool, but the booklet from Imagine Pools, where the shell came from, says we should keep CH between 80-120. They also said we can vacuum up the flakes, which we do, but I’d like them to just go away and not come back.
The salt cell is clean with no buildup. We cleaned it last weekend trying to troubleshoot the flake issue and there was a tiny tiny bit of calcium on it, and after hosing it off clean we still get flakes in the pool.
I’ve attached photos of the calcium(?) on the concrete coping/wall behind the sheer and some flakes I scooped out of the pool with the net. Also attached a better view of the pool since the pic of the sheer makes our water look black. I promise it’s crystal clear, but the shell is volcanic black in color
I watched a YouTube video where some guy said to add phosphate remover to get rid of the flakes, but then read a thread here where someone said don’t listen to the guy on YouTube that said calcium flakes are caused by phosphates lol. Our phosphates on 8/10 were 4456, another thing our pool builder said we should not worry about.
Would adding a calcium increaser to get to 80 help with the flake issue?
Thanks!
Our 15k gallon pool is new (first swim was 3/2024), fiberglass, with waterline tile, a Jandy SWG and a Jandy heater/chiller. We used the heater a bit in March and April, not much at all (in South Louisiana), and have used the chiller the past few weeks about two hours a day when the weather was 100F. We also have 3 water features. A 24” sheer and 2 scuppers, which are on 24/7.
I test the water weekly using a K-2006 kit and take the water to our pool store monthly, with perfect results in JUL and AUG. Here are the results from my testing today:
pH: 8
TA: 80
FC: 2
CH: 30
Salt: 3450
CYA: 50
I add 2 cups muriatic acid weekly, it brings pH down to 7.5-7.7 and by the time I test the following week it’s at 8 again. I added 2 cups after today’s test. I also add 4oz metal out weekly. I’ll also be adding stabilizer tomorrow.
Our pool builder, who is also our pool store, said that we shouldn’t worry about the CH with a fiberglass pool, but the booklet from Imagine Pools, where the shell came from, says we should keep CH between 80-120. They also said we can vacuum up the flakes, which we do, but I’d like them to just go away and not come back.
The salt cell is clean with no buildup. We cleaned it last weekend trying to troubleshoot the flake issue and there was a tiny tiny bit of calcium on it, and after hosing it off clean we still get flakes in the pool.
I’ve attached photos of the calcium(?) on the concrete coping/wall behind the sheer and some flakes I scooped out of the pool with the net. Also attached a better view of the pool since the pic of the sheer makes our water look black. I promise it’s crystal clear, but the shell is volcanic black in color
I watched a YouTube video where some guy said to add phosphate remover to get rid of the flakes, but then read a thread here where someone said don’t listen to the guy on YouTube that said calcium flakes are caused by phosphates lol. Our phosphates on 8/10 were 4456, another thing our pool builder said we should not worry about.
Would adding a calcium increaser to get to 80 help with the flake issue?
Thanks!
Last edited:
I don’t hate it, so I guess that’s good. They then sealed it with some sort of sealer.
