I have this blackness that has spread on my grout to my plaster and on my coping piece. I dont know what it is , where it came from or how to get rid of it. It is only in that 1 foot section of the pool.
the pictures did not come out so good.
1st picture top view of the tile
2nd pic front view of the tile and coping
3rd pic view of the tile you can see where the black is spreading to the plaster
Anyone know what this is ?
How to get rid of it?
Is that black alge?
Last edited by sunofthebeach; 05-26-2006 at 12:23 PM.
What is this?
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