After successfully fixing my own algae problem thanks to this site and buying my own testing kit, I want to fix my parents pool. I was over there today and noticed they have black algae. I scrapped a bit off and it was green. I've read the article on here about black algae, is it correct that the SLAM level is lower than other types of Algae? My parents have a concrete 50,000L SWCG with sand filter. I haven't got any of there current numbers yet as I was only there today. So curious on SLAM FC level required (obv based on the CYA reading)....also after brushing some off today, I'm in for a big upper body workout. Cheers!
Black Algae
- Thread starter AussieSwimmer
- Start date
- May 3, 2014
- 58,309
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Be sure you pass a full SLAM then you maintain an elevated FC for an extended time with brushing to clear the black algae.
- Jun 22, 2014
- 47,759
- Pool Size
- 17888
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
- May 3, 2014
- 58,309
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Yes. CC is burned off by sunlight on the pool surface. And Black Algae must be disturbed (brushed) to let the chlorine attack it.
Raised Chlorine to 18ppm and scrubbed like crazy and haven't lost any chlorine in 2hrs....I thought I would have lost a bit?
Found some algae on that Styrofoam patch on the inside of the flap, you can see the green. Is it ok to rip this off? I'm assuming it's not that important and I could just reattach a new one?
- May 3, 2014
- 58,309
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40