We finished our owner/builder pool up about 6 months ago and I thought all was well.
I downloaded Pool Math, set up my subscription, and started logging my tests. The water has stayed crystal clear since day one, and for the most part, I've been diligent on the maintenance and chemical balance. About 3-4 weeks back, I started noticing small amounts of green algae around the stairs and assumed it was just a dead spot in the circulation..... I started digging into TFP more and realized I had made a big mistake.... I hadn't done a single SLAM the entire time I've been running. DOH! I remedied that this past Monday and got my PH and Alkalinity back under control today.
In my idiot move, I think I may have helped some kind if Algae take hold.... I've started noticing small dark spots (about dime-sized) here and there (pics attached). They're never in clusters, pretty circular, and they do not come up at all - even with a vigorous and prolonged pumice stone attack. I'd like to figure out what these things are, stop any new ones, and remove the ones I've already gotten. Any help would be appreciated!
Complete pool details:
Link to Logs: PoolMath Logs
- Pool located beachside in Central Florida
- 18,000 Gallons with spa
- Gunite shell
- Saltwater Generator (Jandy Aquapure 1400) set to 85%
- Pump runs 8 hours a day (8am - 4pm)
----
* No screen, and it gets direct sun all day long (no overhead vegetation)
* We also built our pool with about 2' of it above ground so we can create some different levels in the yard down the road
* Our pool water is frequently in the 88 - 94 degree range
* We do have hard water (from an artesian well) - but we had a company run it through filters before filling the pool
* Primarily testing with Taylor K2006 - supplemental tests with strips when I'm in a hurry
I downloaded Pool Math, set up my subscription, and started logging my tests. The water has stayed crystal clear since day one, and for the most part, I've been diligent on the maintenance and chemical balance. About 3-4 weeks back, I started noticing small amounts of green algae around the stairs and assumed it was just a dead spot in the circulation..... I started digging into TFP more and realized I had made a big mistake.... I hadn't done a single SLAM the entire time I've been running. DOH! I remedied that this past Monday and got my PH and Alkalinity back under control today.
In my idiot move, I think I may have helped some kind if Algae take hold.... I've started noticing small dark spots (about dime-sized) here and there (pics attached). They're never in clusters, pretty circular, and they do not come up at all - even with a vigorous and prolonged pumice stone attack. I'd like to figure out what these things are, stop any new ones, and remove the ones I've already gotten. Any help would be appreciated!
Complete pool details:
Link to Logs: PoolMath Logs
- Pool located beachside in Central Florida
- 18,000 Gallons with spa
- Gunite shell
- Saltwater Generator (Jandy Aquapure 1400) set to 85%
- Pump runs 8 hours a day (8am - 4pm)
----
* No screen, and it gets direct sun all day long (no overhead vegetation)
* We also built our pool with about 2' of it above ground so we can create some different levels in the yard down the road
* Our pool water is frequently in the 88 - 94 degree range
* We do have hard water (from an artesian well) - but we had a company run it through filters before filling the pool
* Primarily testing with Taylor K2006 - supplemental tests with strips when I'm in a hurry