Results after testing while opening the pool

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T

tenkas

Active member
Jul 23, 2024
42
Montréal (Canada)
Pool Size
5500
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Hayward Turbo Cell (T-CELL-5)
Screenshot_20250425-102249.png

Screenshot_20250425-102249.png



Here are my results while opening the pool.

The pool company came to open it. They put some CalHypo in it (shock).



These are my results after testing with the Taylor kit.

I decided to treat the pool by myself (pool company was saying never put liquid chlorine) but I trust TFP most.

I was thinking of balancing pH before and putting a bit of CYA (no clue what the actual CYA is, water is a bit cloudy once the water is at the 30 mark on the taylor kit, it was 30 before closing).

I guess putting the pH down will take care of the TA.

So once pH and CYA are in line, I would slam the pool because it is cloudy.

The pH was 8 or over (can't know exactly) and the acid demand tests was 7 drops (so for my 5000 gallons Taylor says 1qt (1L) of 20 baume muriatic acid)

here are photos of the pool yesterday (before opening) and today
PXL_20250420_233524208.jpg

PXL_20250420_233524208.jpg


PXL_20250425_131123511.jpg

PXL_20250425_131123511.jpg


I have scrubed, vacuumed and cleaned the filters.
 
For now, only add about 10 ppm worth of stabilizer because it appears you may need to go into the SLAM Process. If you aren't sure about algae, do the Overnight Chlorine Loss Test, but based on the looks of the water, I think a SLAM is in order. If you do have to perform the SLAM, you'll lower the pH to about 7.2 first anyway. Post-SLAM, then go back and do the fine tunning of other levels.
 
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Im slamming the pool, today is a lot more sunny than yesterday, and I it is 13:33 right now, I am losing about 3 FC in 45 minutes, is this normal?

Pool is not green anymore, still a bit cloudy, but 3ppm in 45 minutes sounds huge.

Do I just keep adding more?
 
tenkas said:
Im slamming the pool, today is a lot more sunny than yesterday, and I it is 13:33 right now, I am losing about 3 FC in 45 minutes, is this normal?

Pool is not green anymore, still a bit cloudy, but 3ppm in 45 minutes sounds huge.

Do I just keep adding more?
Click to expand...
CYA was at 30, should I retest CYA? Is it possible that CYA got lower by itself?
 

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I am reporting that the SLAM works! (this is my first one).

I was able to hold chlorine during the night, and CC is lower than 0.5

Now for the clarity of water, how clear should it get before I stop slamming?

Also, when you test clarity, do you put your pump off? (I have a small pool and the turbulence in the water from the jets makes it less clear).
 
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