I have some strange raised bumps on the bottom of my plaster pool. They range in size from a dime to 1/2 dollar. They can be scrapped off using a pumice stone. What could have caused these and what is the best way to remove them? Thanks
frustratedpoolmom said:Kinda look like Black Algae, but its hard to tell from the pics.
try rubbing a trichlor tablet on a spot, see what it does.
When you use the pumice stone - does it leave behind any residual or staining?
waste said:frustratedpoolmom said:Kinda look like Black Algae, but its hard to tell from the pics.
try rubbing a trichlor tablet on a spot, see what it does.
When you use the pumice stone - does it leave behind any residual or staining?
Ann, sorry to say that that looks nothing like Black algae
It does look like some sort of algae clump.
Nail it with cl and I'd bet it just goes 'bye bye'