Been SLAMing since Saturday, pool has been "clear" (or at least not green) since Sunday morning. Finally got rid of the cloudiness around Tuesday evening so it looks great, but it's still using a ton of chlorine. Went from 12 ppm last night to 6 first thing this morning. What should I do now? Just keep it up until it quits using chlorine so fast?
SLAM - Water is clear but still using up a lot of chlorine!
- Thread starter Desire5292
- Start date
It's time to look for hidden algae. Something is using up that chlorine and it's not the sun.
Check out the pictures.
www.troublefreepool.com
www.troublefreepool.com
www.troublefreepool.com
Check out the pictures.
Problem Found and Ideas needed
I began SLAMing my pool 4 days ago (84 hours). My CYA is somewhere between 25-40 so I used the SLAM values for Mustard at 30-40 CYA, which is about FC 22 or mustard and 14 for a normal SLAM. I checked the FC every 3-4 hours and after the first couple of checks where the FC drop was 5-8 the...
www.troublefreepool.com
Think I may have found my FC demand issue?
Not saying conclusively BUT.... I've been chasing a FC demand issue that maintaining shock levels for days wasn't taming. Have been losing about 6ppm FC per night while trying to achieve the OCLT. Pool is sparkling as if there is almost no water in it. No CC or less than .5. Still consuming...
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Water problems
I've been slamming my pool for about a week now and although I have cleared the water up my water is still cloudy. Cya is at 40 so I'm using 16 as my chlorine shock level according to the cya/chlorine chart. When I started slamming I had a combined chlorine of 1 and I did get that down to 0. Any...
www.troublefreepool.com
I read those. Thanks! Here's the thing...I have an above ground pool, we haven't put the steps in yet, no lights, etc...the only things in the sides are the skimmer going to the pump and the return jet from the filter. Could it be something in those or in the hoses to/from pump and filter, or in the pump or filter themselves? I confess, I know very little about maintenance of the pump or filter and haven't done much other than backwashing the filter.
KarenNJ
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KarenNJ
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I added enough at the beginning of SLAM to raise it to 30. I haven't tested it. Should I make sure?
KarenNJ
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I personally always check the CYA a day after added more just to make sure I am where I want to be. If you ended up being below 30 you could be too low to hold the chlorine level. Although if you had that much loss overnight there probably is algae hiding somewhere.....
Okay, here's an update...yesterday I got out there and brushed really well again and got the small amount of junk that had settled on the bottom stirred up. Backwashed filter to make sure it's functioning at its best, etc. This morning there's not much of anything settled on the bottom and I lost no chlorine overnight. So, since I never really found the problem, should I keep it at shock level until I figure it out? Or since the water's clear and it held chlorine overnight, should I assume I'm done SLAMing and move on?
I SLAMed pool for 6 days, yesterday AM the water was very clear and had held the same FC (12) all night. Decided to let the FC drift down for the day and tested everything this morning. Here are the results:
FC - 3.5
CC - 0
TA - 90
CYA - 20
PH - 7.4
Didn't test CH because it's a vinyl liner pool and from everything I've heard it doesn't matter?
Just wondering what my next step is? I'm assuming I need more stabilizer to bring CYA up and should probably bring the FC up a bit. Is it normal for the FC to go from 12 to 3.5 in a day with the CYA that low or is there another issue I should worry about? We haven't had any rain lately and the temp is in the 90s with full sun on the pool all day, if that makes a difference.
FC - 3.5
CC - 0
TA - 90
CYA - 20
PH - 7.4
Didn't test CH because it's a vinyl liner pool and from everything I've heard it doesn't matter?
Just wondering what my next step is? I'm assuming I need more stabilizer to bring CYA up and should probably bring the FC up a bit. Is it normal for the FC to go from 12 to 3.5 in a day with the CYA that low or is there another issue I should worry about? We haven't had any rain lately and the temp is in the 90s with full sun on the pool all day, if that makes a difference.
- May 3, 2014
- 58,370
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Add 20 ppm CYA via the sock method. Follow the FC/CYA Levels based on 40 ppm CYA.
CH only matters in a vinyl pool if it is above 400 ppm or so.
Air temperature has little effect on pool water chemistry.
That is a substantial drop of FC in one day. Monitor to be sure you fully completed the SLAM. I assume the water is crystal clear.
CH only matters in a vinyl pool if it is above 400 ppm or so.
Air temperature has little effect on pool water chemistry.
That is a substantial drop of FC in one day. Monitor to be sure you fully completed the SLAM. I assume the water is crystal clear.
Will do. Water is very clear and has been for days. Just kept losing chlorine. Not sure what could cause it to keep dropping like that...there's nowhere algae could be hiding! I will watch it though. Hopefully the additional CYA will help. 
Thanks!
Thanks!