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Final update (on this post): Finally got rid of all the algae and have turned the swamp into an oasis! Still more work to do, but confident I can get anything I need to get done with this site. Donation incoming! Transformation pic attached!

Final Update: Passed a OCLT test after 3 days of 35FC SLAM. Water is perfectly clear. CYA is still very high and I have a bit of staining, but overall im extremely happy. Plan moving forward is to let the chlorine levels drop, perform a series of partial drains and refills over the next two...

Update: I have been SLAMing (for real this time!) for over 24 hours now and at least 90% of the staining is gone and most of the bigger black dots are either gone or showing signs of degredation. I now just have to figure out what is actually a stain (I know there were some on rough parts of...

Update: Looks like at least some of it is black algae. Finally found some close to the surface and scraped it with a screwdriver. Very green once put on a paper towel. Frankly, I don't think that keeping the levels of chlorine at this CYA level is suatainable, so im going to try and do another...

I will try to get a sample and report back later!

I bought the house 3 months ago, so I dont have a full picture. I used the trichlor tabs that the previous owner used before. Do not believe that there is any copper in it. Have not used any algaecide. Have stopped since and did a simultenous water exchange of 20k gallons to try to get the CYA...

interesting. I will try to get some, but most of it is in the deeper sections of the pool. It was not present before this algae bloom, so I am confused as to what it would be since it wont come off with any sort of brushing or vaccuming

You are 100% right. Using the app and I didnt see there was a slider under the SLAM reccomendation that changed. it. Should be at FC35. Not sure if that is sustainable for any period of time...that is about 40$ a night at local chlorine prices. Might be time to start draining again

I should clarify as this is an older thread. I have been SLAMing for 7 days now. Major improvements except for the the bottom of the pool (and a few on the sides). I have virgorously scrubbed with a wire brush for several days in a row. Wondering if I need to either drain to lower CYA or raise...

Update: Pool water is extremely clear and I can easily see the bottom. Unfortunately, as I noted on my other post, it seems I have a big black algae problem. Hopefully I can sort this one out too, but so far its been very, very stubborn

Update: The pool water is now virtually crystal clear. I can easily see the bottom on the pool. Unfortunately, it seems that I have a massive black algae infestation (virtually the entirety of the bottom of the pool has it). I have wire brushed the heck out of it and tried to keep my FC at the...

Still have a lot of stubborn algae or algae staining (not sure which it is) to deal with, but massive improvements in water quality so far!

Thank you for the advice. I will do this and see. I think, however, that it was likely just original error/wishful thinking bias to start.

I am guessing that you are right. Right now the plan is to get major issues under control and then slowly continue to lower my CYA via partial drains and backwashing over time to the point where if I must use a few pucks while I am away, I don't create more problems. Meanwhile, I plan to...

I noted in another thread my issues, but I am starting to see some progress...Still a long road ahead, but at least I'm not harboring a mosquito/lake monster factory in my back yard anymore :)

Update: I have continued the SLAM process for a day and a half now. Seeing obvious improvements, but still have a long, long way to go. CYA still testing ~80-90. Other than testing error, the only thing I can think of they CYA rose is due to there being concentrated amounts in the...

Thanks to both of you. I updated my signature. Ill get a picture of my pool up once it looks less like the Swamp Thing's lair. :)

Thanks for the quick reply. I'm sure that lighting or error is the case, but it was hard to swallow confirming a level of 60 several times last evening to a level back up to 100. Given how bad the algae is, I think I will attempt to keep the levels high and clean the pool up a bit before I...

Hello all, I am just starting to learn about pool chemistry and have lurked and read on the site quite a bit, but excuse my ignorance in advance. Bought a new house with a pool a few months ago. Pool was sparkling, but not knowing much about pools, I maintained it with pucks (what the previous...

Hello all! Bought my first house in Arizona with an older pool and am trying to learn as much as possible so that I can maintain the pool correctly! So far, my luck has not been great, but hopefully with TFP I can get on top of it and get back to enjoying the pool!