Slam or No?

[Bruno2]

Here are some pics of my water:



My chlorine is at 8 ppm. I raised it to 9 ppm Sunday. It looks a little cloudy, but it is clearing. The second picture is the pool vacuum and the drain under 9'6" of water. Do I need to do a full tilt slam raising it to 28 ppm or will less do?

 

[Texas Splash]

Honestly, I'm having a hard time telling if the deep end is obscured from the water movement or organics. You might know better than me. But if in doubt, you could run an Overnight Chlorine Loss Test this evening to see if there's any excessive FC loss. If so, then you know you need to SLAM. Even if you just do an OCLT this evening, it won't hurt to increase the FC to 50-75% of your SLAM level just to help it overnight if the water was a bit stressed for some reason. If you confirm a SLAM, go 100% all the way.

 

[Bruno2]

I tested the FC at 8 ppm around 1:00 PM. Should I test again in the morning or afternoon?

- - - Updated - - -

I will shut the pump off and take another photo.

 

[Richard320]

I tested the FC at 8 ppm around 1:00 PM. Should I test again in the morning or afternoon?

- - - Updated - - -

I will shut the pump off and take another photo.

Test FC after the sun stops shining on the water and again in the morning before it hits it again. In a perfect world, the two readings will be the same, because two things consume FC: Organics (algae) and sunlight. By eliminating sunlight, you can see if you lose any to organics. That's an Overnight Chlorine Loss Test -- Overnight Chlorine Loss Test

 

[Bruno2]

I did and the file is too big.

 

[Bruno2]

I tested the FC this morning and dropped to 3 while the CC held at 0.5 or 1 ish. Time to SLAM? If I do should I start it this evening when the sun goes on the other side of the house?

 

[Richard320]

I tested the FC this morning and dropped to 3 while the CC held at 0.5 or 1 ish. Time to SLAM? If I do should I start it this evening when the sun goes on the other side of the house?

I'd start now. Otherwise, the algae that's in there will have an extra day to grow.

 

[Bruno2]

It rained all day today. The pool is higher than it should be. I hit it with 9- 121oz (1089 oz) jugs of Clorox around 3 PM.I let it circulate for an hour and I just re tested it. The FC was 25 ppm and the CC was still at 0.5. Should it still be at 0.5? It almost registered that it had "0" CC. Can I not test for CC while the FC is this high?

I added another 121oz of Clorox to see how close that gets me to the desired 28ppm for the shock. I will re test around 6 PM.

 

[Richard320]

It rained all day today. The pool is higher than it should be. I hit it with 9- 121oz (1089 oz) jugs of Clorox around 3 PM.I let it circulate for an hour and I just re tested it. The FC was 25 ppm and the CC was still at 0.5. Should it still be at 0.5? It almost registered that it had "0" CC. Can I not test for CC while the FC is this high?

I added another 121oz of Clorox to see how close that gets me to the desired 28ppm for the shock. I will re test around 6 PM.

CC will fluctuate. Even when a pool is pristine and hasn't seen algae in years the CC pops up once in a while. Don't fret about it.

 

[GOONiE]

What is your CYA at?

 

[Bruno2]

What is your CYA at?

64ish.

 

[GOONiE]

64ish.

how are you getting such an accurate number? most tests only do increments of 10.

 

[Bruno2]

Ok, I got it to 28 ppm.

- - - Updated - - -

My test tube has a space between the increments of 10. Sort of like a speedometer has the marks in between the 10's.

 

[Bruno2]

Should I test again tonight or in the morning?

 

[kellyfair]

Test FC again tonight, bring to 28 if it has dropped, then test in AM.

 

[Bruno2]

Still at FC 28 and CC 0.5

 

[kellyfair]

Ok! Get a good night’s sleep and we will see what we have tomorrow.

 

[Bruno2]

The last test last showed a FC 28. This morning the OCLT was 26 and the CC is probably below 0.5.

Should I bump the FC back to 28 or leave it alone?

 

[Richard320]

The last test last showed a FC 28. This morning the OCLT was 26 and the CC is probably below 0.5.

Should I bump the FC back to 28 or leave it alone?

Back up to 28.

 

[skimmerswimmer]

Does Clorox even make regular bleach anymore without the Cloromax technology? I haven't seen any regular bleach from Clorox this year at all, and it is not on their website either. If your Clorox has "Cloromax", then you need to stop using it and change to a regular bleach (6-8% Sodium Hypochlorite) with no additives or liquid chlorine shock (10+% Sodium Hypochlorite).