Sticky algae

[3STTW]

I've had all sorts of algae in my pool, the worst being black algae which roots into the grout. I got rid of that a while ago and control it with Black Advance and I try to keep the pH down around 7.2 - 7.4.

Now I've got some greenish stuff which sticks to the surface of the tiles. I ran a Black Advance cycle (apply, leave pumps off for 72hrs, vacuum) and noticed that the vacuum didn't remove it.

 

So I ran the robot and that picked it up pretty well, when I rinsed the robot filter it looked a lot like normal green algae but it was kind of gritty - but it also stuck itself all round the sink, I literally had to take a scouring pad to it to get it off.

Anyway, 3 days later and the algae is back on the pool tiles.

The start of this was around the time I did the 6 month flocculent treatment (Clear Advance) in late November. It's been really windy recently so that may account for the grit, but Black Advance normally kills off all types of algae.

Any ideas?

[kelboy]

What type of pool salt etc,covered or open air?

[observer90210]

Get a pro pool cleaner on a regular basis.

[Kenny Kenny]

Observer90210......Do you know a pro pool cleaner in Chonburi/Pattaya area by any chance?