Looking for help -- had some brown algae after winter -- superchlorinated to like 22..gone for a few days -- then back again - Have been keeping chlorine at 10-20 -- brown algae reappears almost every day on vinyl liner for 2 weeks ---- the algaecides all say wait til chlorine is normal (1-4) -- so just brushing and adding chlorine has not been good enough. Numbers look ok & water is clear. Basic numbers -- pH 7.8, Chlorine 12, alkalinity 98, cya 55, calcium hardness 150, near zero phosphates, Iron & Copper at .1
Fighting Yellow/Brown Algae
- Thread starter Oldkenohio
- Start date
- May 3, 2014
- 58,612
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Welcome to the forum!
You need to follow the SLAM Process.
Do you have your own test kit?
I suggest you read ABC's of Pool Water Chemistry.
You need to follow the SLAM Process.
Do you have your own test kit?
I suggest you read ABC's of Pool Water Chemistry.
Thanks for the reply — I use a Taylor 2006 - thinking that raising to 22 free chlorine at 50 cya would do it - but kept coming back - On SLAM, how long would I keep FC In the 20’s??
- May 3, 2014
- 58,612
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Did you read the article? You maintain your SLAM level FC until you pass the three criteria.
yes - read the article - water continues to be very clear - CC at 0- ... will do overnight again tonight - FC at 8 as I write this - still a few small brown patches - so brushed again - will check in morning - thanks again!
I suspect I did keep SLAM level long enough ... and do you think I should get a few small patches left even if slam is completed?? - have always had zero CC and very clear for over 10 days
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