Hi, thanks to everyone here on the forums I brought my swamp pool to a crystal clear pool this summer. It's been great except for the fact that I keep getting alge on the bottom of the pool and on the walls. I vacuum and I keep my chlorine levels up with 3 inch chlorine tablets. I dont know how to stop this. The water is clear until i sweep or vacuum, then it has a green tint to it. The bottom looks like it has clumps of algae when this happens btw. Thanks.