We recently had a bad outbreak of black algae in the pool. Black algae is unfortunately one of the hardest to get rid of and while we had done a treatment, just before we went to Islamorada recently, it had not impacted it at all.
With Patrick (the primary pool user) going to Chicago, we decided that those would be good days to really try the tackle the problem.
If you zoom in you can see some of the algae but these photos do not show the true story, it was so much worse than these pictures look like.
I bought this in our local pool shop. Based on the instructions on the internet and the back of it I decided I'd be using 1/2 - 3/4 of the container all in one go. A massive dose! The pool could not be used whatsoever during the period of treatment.
Saturday: we shocked the pool (one packet), added chlorine puck as normal and brushed the pool morning and evening.
Sunday: brushed the pool. Again, twice. And vigorously.
Monday: first swept the pool - really vigorously so as to agitate the algae. Then added the treatment (pictured). Brushed in the evening (vigorously).
Tuesday: Brushed the pool in the morning. Another vigorous brush in the evening and then added TWO packets of shock to the pool.
Wednesday: morning and evening brushing. One packet of shock
I have continued with the two brushings daily and this is the result now. I will however brush a little less vigorously going forward - I can see it is affecting the pool liner/I don't want to do more damage, just want to manage the algae! That being said, definitely we have an improvement.
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