Death by green algae

[TQA]

It is not quite that bad but it is close. In 15 years of mostly Caribbean cruising I have never had this issue before. I know in the UK the goto remedy is Patio Magic but it does not seem to be on the shelves or listed anywhere in the Carib.

View attachment 74381

So does anyone know of an alternative probably something available in the USA or France that will do the job. Some of my sheets are green too.

Failing that what is the active fungicide in Patio Magic.

 

[sarabande]

Benzalkonium chloride

 

[Momac]

Wet and Forget
https://www.walmart.com/ip/Wet-And-Forget-800006-1-Gallon-Concentrate/21903016

.

 

[paulajayne]

Mild bleach solution (Circa 1 cup to bucket)- allow to dwell for about 10 mins then wash off.

Repeat as required.