Help ! Is this black Algae ?

[Kijohn87]

hi
I am wondering what this is.. is it black algae. Doesn’t come off easily at all.. I use the steel brush and changes slight colour from black to greenish… used the puck and brush and puck and brush.. and no change.

Currently slamming the pool as it’s gone cloudy. Went cloudy as fc dropped to 4 and cya of 50.. issue seems to be made harder as we have heated the pool and it’s currently 30 degrees..

wife wants me to head to a pool shop

 

[ajw22]

First you need to get your pool algae free following the SLAM Process

Then you follow…

Black Algae

This guide provides a step by step procedure for eliminating black algae in your concrete or gunite pool. Read full post here.

www.troublefreepool.com

Pool Shop will not do you any good. Do not begin adding magic Algaecide potions for the black algae.