Hi everyone I have been fighting an algae/black mold bloom for the past 6 weeks. After lots of scrubbing/SLAM, chemistry is great, water is crystal clear and then algae returns with the worst adhering to bottom of pool and the process starts over again. All of this began after a torrential downpour where we received several inches of rain in the matter of a couple hours which overflowed the pool and much runoff/dirt entered the pool.
Swimming with the kids yesterday I noticed a large amount of green/black algae inside the bottom of both pool drains resting on the plumbing. It appears SLAM it is not doing any good of killing it. Any options other than hiring a professional to drain and clean it out? Bottom drain appears to function property when I divert suction only to drain, just hate to drain pool when the chemistry is great and water is clear if not temporarily.
The black center of the drain in the picture below is algae. The dark specks you see is the pebble tec finish, not algae.
Any other options?
![20220619_115249.jpg 20220619_115249.jpg](https://www.troublefreepool.com/data/attachments/222/222871-050e301dfe53a5d4ba2556a0ae41b5c7.jpg)
Swimming with the kids yesterday I noticed a large amount of green/black algae inside the bottom of both pool drains resting on the plumbing. It appears SLAM it is not doing any good of killing it. Any options other than hiring a professional to drain and clean it out? Bottom drain appears to function property when I divert suction only to drain, just hate to drain pool when the chemistry is great and water is clear if not temporarily.
The black center of the drain in the picture below is algae. The dark specks you see is the pebble tec finish, not algae.
Any other options?
![20220619_115249.jpg 20220619_115249.jpg](https://www.troublefreepool.com/data/attachments/222/222871-050e301dfe53a5d4ba2556a0ae41b5c7.jpg)
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