Phosphates

ethany

LifeTime Supporter
May 23, 2009
528
Trenton NJ
Opening late this year is costing me a fortune. I opened about 3 weeks ago. Between that and not following the proper way of SLAMing ( stopping too soon).

I have another question ......I realize you have to get cya in the water ASAP when you first open. But we also need to backwash quite often. I guess what I’m asking is how not to waste too much money......LOL
 

ping

TFP Expert
LifeTime Supporter
Jun 24, 2011
3,143
Long Beach, CA
The pool will hopefully have some CYA left over from the winter. If the CYA is 0 upon opening then you might have some issues to deal with. The ideal CYA level to complete a SLAM is 20-30 range as it will take less chlorine to reach SLAM levels and still be protected from the sun.
 

ethany

LifeTime Supporter
May 23, 2009
528
Trenton NJ
I’m almost ready to give up on slamming and buying phosphate remover. I went through 20 gallons plus in the last couple days with no end in sight. I never had an issue like this in the 15 yrs I owned this pool. The water is crystal clear yet I’m still losing chlorine.

With my cya of 80 I’m spending a fortune on bleach. I never used a Phosphate remover before but I’m getting pretty desperate.
 

ping

TFP Expert
LifeTime Supporter
Jun 24, 2011
3,143
Long Beach, CA
Stay the course, phosphate remover removes phosphate not algae.

You have only been SLAMming for 3 days, make sure the FC stays at or above the target FC level for the SLAM.

If you want to use less bleach then do a partial drain to lower the CYA.
 

Richard320

TFP Expert
LifeTime Supporter
Jan 6, 2010
23,932
San Dimas, CA (LA County)
I’m almost ready to give up on slamming and buying phosphate remover. I went through 20 gallons plus in the last couple days with no end in sight. I never had an issue like this in the 15 yrs I owned this pool. The water is crystal clear yet I’m still losing chlorine.

With my cya of 80 I’m spending a fortune on bleach. I never used a Phosphate remover before but I’m getting pretty desperate.
Better read the directions for Phos-free before you pour it in. Especially the part that says

Important: Algae must be treated prior to testing and lowering phosphates. Chlorine must be under 5ppm before testing phosphates.


Phosfree | Backyard Water Care | Natural Chemistry
 

domct203

Bronze Supporter
LifeTime Supporter
TFP Guide
Jun 3, 2015
3,959
CT
I dropped my cya down to 50. Hopefully I’m done slamming soon. Almost two weeks now

Following this thread, you’ve been SLAMming for 7-8 days, how does the water look?

What is your daily FC loss?

How often are you testing and dosing during the day?

Are you brushing daily?
 

ethany

LifeTime Supporter
May 23, 2009
528
Trenton NJ
I’m losing 6-7 ppm per day since dropping to 50. I been dosing at sunrise n at 5:00 pm. I’m working 6 days a week now so it’s hard to do more often.

The water loooks great. That’s the frustrating part. Also I guess I’m frustrated because I never had an issue like this. I’ve slammed in the past and by the time the water was looking this good I was done.
 

domct203

Bronze Supporter
LifeTime Supporter
TFP Guide
Jun 3, 2015
3,959
CT
Sure, you can use the cleaner.

What is preventing you from ending the SLAM? CC greater than 0.5ppm? Can’t pass an OCLT? It sounds like the water is now clear.
 

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mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
36,056
Laughlin, NV
Pool Size
6000
Surface
Fiberglass
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
Now that your CYA is lower and you can SLAM at a lower FC, you may find you can pass the OCLT. The FAS-DPD testing at very elevated concentrations of FC will have error (just from sample size and reagent drop size each time at the least) such that it can easily be off 1 ppm when testing.
 

Leebo

Admin
TFP Expert
LifeTime Supporter
Jul 21, 2011
10,382
Eastern Ohio
Pool Size
25000
Surface
Vinyl
Chlorine
Liquid Chlorine
If it were me I’d take a step back as it sounds like something is off here. A few quick questions,

1. What test kit are you using?
2. Can you post a photo of your pool?
3. Can you post a complete set of test results?
 

ethany

LifeTime Supporter
May 23, 2009
528
Trenton NJ
4BC71B3C-CD7C-48D1-8177-4573760E6788.jpgD62F5A9B-3EEE-4EB3-9A66-99F3659CEC9A.jpgD62F5A9B-3EEE-4EB3-9A66-99F3659CEC9A.jpg
If it were me I’d take a step back as it sounds like something is off here. A few quick questions,

1. What test kit are you using?
2. Can you post a photo of your pool?
3. Can you post a complete set of test results?
FC-22
Cc-.5
Ph-over 8 (I assume it’s high since I been slamming for some time)
TA-also High
Ch-250
Cya-50

I’m using a Taylor K-2006 kit
 

Catanzaro

Platinum Supporter
TFP Guide
Jul 30, 2014
3,471
Monmouth County, New Jersey
I think I’ll call it the “OCGT”, or Overnight Chlorine Generation Test” LOL

I like it!

- - - Updated - - -

Lost 7 ppm over night

Three items come to mind.

1) Are you 100% certain of the size of your pool?
2) Have you checked the Julian date on the bleach? Were did you purchase it, and where is it stored?
3) The most important question. Who is testing your water? If you are, please advise of the test kit and how old the reagents are?

Something is definitely off for your water to look clear and loose 7 ppm overnight. This means you are loosing more during the day.

Question: how much bleach are you adding, and when are you adding it?

Sorry, to long to read through the entire contents.
 

ethany

LifeTime Supporter
May 23, 2009
528
Trenton NJ
Ok for those following this post.......I’m finally done slamming. It’s been a real head scratcher this year. The big lesson I learned was to get cya in the water but keep it around 50 til slamming is complete. And stay the coarse......
 
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