I recently had an algae bloom and have been doing the SLAM process for the past several weeks. My water is now clear and I passed the other two tests so I am confident the algae is gone.
However, one of the things I have discovered with my newly clear water is that the bottom of my pool is now stained pretty extensively. The stains are brownish in color and are visible throughout the pool. I have tried the puck test but the stains did not seem to lighten. Since I have been doing battle with the algae I feel like the stains are likely organic so am wondering why the puck has no effect. I don't have any vitamin C on hand to try the other test.
Now that the SLAM is complete I have a full set of test results to share.
FC = 6.5
CC = 0.5
pH = 7.5
TA = 40
CH = 50
CYA = 25
Here are a couple photos of the stains.
Please let me know your thoughts on my options for removing the stains.
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