I have a friend who has a pebble tech pool that has significant black algae stains.
We have tried water blasting them off (the pool is still full) but it is very tough. have also tried brushing but it is really not making a dent.
Any ideas?
We have tried water blasting them off (the pool is still full) but it is very tough. have also tried brushing but it is really not making a dent.
Any ideas?