- May 3, 2014
- 62,717
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Pool Nube ( Phosphates )
- Thread starter weq92f
- Start date
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- Tags
- fc testing nube pool store scared
I usually wait till the next day to test after adding cya - usually subsequent tests are the same. If you are confident that your volume is close you should trust the pool math calcs. Be sure to log your chemical additions in pool math it helps to be able to look at what you did when
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After the 2 lbs, CYA=20 now pretty solidly. I'll be adding another pound this evening.
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I've been keeping the FC level somewhat consistently high, in accordance with the CYA/FC chart for SLAM, for a couple days. I ~may~ be seeing a decline in the FC consumption rate. CYA is now 30 and pH is 7.8 ... I've gone through over 20 gallons of chlorine. Hopefully there's a point at which the chlorine starts to hang around longer? What is responsible for crunching through all the chlorine?
I've been keeping the FC level somewhat consistently high, in accordance with the CYA/FC chart for SLAM, for a couple days. I ~may~ be seeing a decline in the FC consumption rate. CYA is now 30 and pH is 7.8 ... I've gone through over 20 gallons of chlorine. Hopefully there's a point at which the chlorine starts to hang around longer? What is responsible for crunching through all the chlorine?
reggiehammond
Gold Supporter
- Oct 4, 2020
- 2,253
- Pool Size
- 30000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-60 Plus
UV, heat and organics.
At this time of year in north Texas, cya of 30 may be too little to stand up to high Summer.
Also - FYI pH is inaccurate above FC of 10
CraigChing
Gold Supporter
- Jun 15, 2019
- 202
- Pool Size
- 22000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Take a step back, take a breath, and notice how everyone trusts your test results over the pool store’s. Nice job, you’re well on your way to a crystal clear, trouble free pool!
- Jun 1, 2018
- 16,027
- Pool Size
- 26000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
You’re in the Pool Owner Patience part now… just keep feeding the beast!
Consistency in maintaining slam level is key. Also not sure if it’s been mentioned but scrub all your nooks & crannies. Algae likes to hide! Check weir doors (foam), skimmer throats, drain covers, ladders & their rails, light niches, & water features.
Before u know it you’ll be looking @ tfp clear water & passing an Overnight Chlorine Loss Test.
How does the water look
currently?
Consistency in maintaining slam level is key. Also not sure if it’s been mentioned but scrub all your nooks & crannies. Algae likes to hide! Check weir doors (foam), skimmer throats, drain covers, ladders & their rails, light niches, & water features.
Before u know it you’ll be looking @ tfp clear water & passing an Overnight Chlorine Loss Test.
How does the water look
currently?.
This morning my FC=3!!!!!!!! This is the first time a morning test showed anything better than essentially zero! Then we got a couple inches of additional pool water via a thunderstorm
This morning my FC=3!!!!!!!! This is the first time a morning test showed anything better than essentially zero! Then we got a couple inches of additional pool water via a thunderstorm
reggiehammond
Gold Supporter
- Oct 4, 2020
- 2,253
- Pool Size
- 30000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-60 Plus
That worries me a lot that you’re running FC that low, regularly..
This morning my FC=3!!!!!!!! This is the first time a morning test showed anything better than essentially zero! Then we got a couple inches of additional pool water via a thunderstorm
Your FC should be 5-6, all the time; flirting with or going below the minimum will keep you in a never-ending algae battle.
If I could wave a magic wand over the pool and just have it regulate itself to FC=5-7 all the time I would. But for now I have to constantly monitor and adjust FC. After an entire night of no monitoring and no adjusting, the FC level drops to near zero. Nothing I can do about that short of staying up all night with the pool -- not something I'm going to do. It is a win in my book to have seen FC > 0 in the morning. If my thinking is wrong, please set me straight
The pool volume in your PoolMath logs is quite a bit different than in your signature, make sure you have it correct in PoolMath.
If I have a sense of how much will be lost overnight I try to make sure the chlorine level is high enough in the evening so that by morning it is still at SLAM levels. Repitition and recording test results helps me get that feel...
If I have a sense of how much will be lost overnight I try to make sure the chlorine level is high enough in the evening so that by morning it is still at SLAM levels. Repitition and recording test results helps me get that feel...
- Jun 1, 2018
- 16,027
- Pool Size
- 26000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Hayward Aqua Rite (T-15)
If you are losing more than 1 ppm fc overnight there are still organics consuming your fc.If I could wave a magic wand over the pool and just have it regulate itself to FC=5-7 all the time I would. But for now I have to constantly monitor and adjust FC. After an entire night of no monitoring and no adjusting, the FC level drops to near zero. Nothing I can do about that short of staying up all night with the pool -- not something I'm going to do. It is a win in my book to have seen FC > 0 in the morning. If my thinking is wrong, please set me straight
After you complete the SLAM Process - which includes passing all 3 end of slam criteria you should be able to maintain a proper fc for your cya (above minimum) if you dose to the high target once per day - this is assuming u have a cya in the 40-50 range to prevent excessive fc loss from uv.
Average fc loss of most pools is 2-4 ppm/day.