Stain and/or Algae
- Thread starter Paul Evert
- Start date
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- Tags
- algae
I have a related question about the test for CC: Step 4. The test solution returned to pink after adding 5 drops of R-0003 for the test I just did this afternoon. I added 32 drops of of R-871 but the solution did not return to clear and I stopped. Should I have kept going?
- Jul 21, 2013
- 53,931
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Are you using a 10ml or 25ml test sample?
What was your FC?
Have you used any sulfamic acid or algeacides or other unusual chemical treatments?
If the sample was tested for FC and then you waited a while, it can turn pink again without adding drops. That’s normal. If you’re testing right away then something is odd.
- Mar 5, 2020
- 3,173
- Pool Size
- 66000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Astral Viron V35
Just to avoid confusion: "Clear" means in this test "not pink". The sample can turn a bit cloudy, that's normal and just ignore it.
I'm using a 10 ml test sample and nothing has been added for a week. The today's readings are:
FC: 05
CC: 31 (It turned clear today)
PH: 8.2
TA: 90
CH: 300
CYA: 45
CSI: 0.50
I test right away but it went to clear today. I must have done something incorrectly the other day
- Jul 21, 2013
- 53,931
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Something’s very wrong with your testing, the water is a nuclear hazmat zone, or you added some non-chlorine shock.
- Mar 5, 2020
- 3,173
- Pool Size
- 66000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Astral Viron V35
Copper and Scale stuff is sulfamic acid, which causes the high CC levels.
- Mar 5, 2020
- 3,173
- Pool Size
- 66000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Astral Viron V35
Good catch, thanks James
That's why it's good to keep everything in one thread.
That's why it's good to keep everything in one thread.
How did I not see that. Yea, the drops get divided by two, not multiplied. That’s helps a lot but still odd.
- Jul 21, 2013
- 53,931
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Acid - Further Reading
www.troublefreepool.com
FC Testing After Using Sulfamic Acid
FC + CC = TC. So when you do the tests, add your FC and CC together and just consider that total number as your FC until the elevated CC goes away.Sulfamic acid is similar to cyanuric acid in that chlorine will combine with it and reach an equilibrium. The bond is actually stronger than with cyanuric acid. That's why the chlorine registers as CC.
Periodically do an OCLT to detect any excessive organic buildup. As long as you're passing the OCLT, your total chlorine level should be adequate.
It had taken members months of SLAM level FC to clear CCs after using Jack's Magic #2 Copper and Scale Stuff.