I have a little algae growing on my patio.

Well the super hot summer we are going to have this year will sort that out Val! Lol!
Maybe a back up plan of a stiff brush and a diluted bucket of miltons would be wise!

 

Yes, I shall clean it all again, but I am then laying artificial turf!!

 

Fecking algae is such a pain in the bum

 

I couldn't say it better!!!!

 

Oh gracious I feel your pain! We get it too, hubby is forever cleaning he patio.