I have a big old pool 32 x 16...they don't make these anymore down here. It's been blue and pretty with a fairly new pebble tech surface. Not any more. It seems I have green algae that has attached itself to my pebble tech. Brushing does not make clouds, the water is crystal clear but the water is light green. I am having a new filter put in next week but I don't think this will make a difference. Is there anything I can do to remove the green algae from the pebble tech? It started in eary summer and fool that I am I thought that since I have a salt chlorinator that over time the water might just turn green...you know, like the ocean. OK, so I am an idiot and I am blue but I want my pool water to be blue!