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    SLAM Mustard Algae?

    Wanted to give an update as we're nearing the end of the season - We did have algae, and we did eradicate it using the SLAM method. We did mustard algae SLAM (significantly higher chlorine levels) for at least a week after the regular SLAM. We threw everything in the pool as directed, (toys...
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    SLAM Mustard Algae?

    Reading through this TFP post suggests (JoyfulNoise post) that maybe for myself (with a well with lots of iron) maybe a reason or two to at least consider phosphate removal. I understand your analogy, essentially saying we still have something growing. Is it possible that this dead algae is...
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    SLAM Mustard Algae?

    As far as I can tell we have scrubbed everything everywhere. We really don't have much in the pool, the stairs are built in, no lights, no main drain. We clean the skimmer area and well around the steps. What about phosphates? I'm reading that phosphates are the food for algae and if I'm not...
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    SLAM Mustard Algae?

    Alright so here is an update over the past week. We ended up seemingly getting rid of the brown spots... but only for it to reappear a day or so later. Our CYA lowered (due to water displacement) to 40 and we have been maintaining mustard shock level (~24ppm) for about 4 days in hopes to...
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    SLAM Mustard Algae?

    Yes, so we'll see. Maybe that was contributing to it? We'll see what happens overnight.
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    SLAM Mustard Algae?

    Here's the weir door. I took it out and scrubbed it and put it back in just now. There appeared to be some black stuff on it, but nothing substantial it seems.
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    SLAM Mustard Algae?

    I should also note that the water is crystal clear. There is just a little dead algae, or so it appears, accumulating in low crevices overnight. By the end of the day there is more in those crevices but hardly any in the morning. Which I guess would make sense if the algae isn't active/affecting...
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    SLAM Mustard Algae?

    I haven't deep cleaned the filter but I just changed the sand (due to thinking the laterals may have been broken). So the sand is brand new in the filter (everything I had in there was flushed out in the process and new pool sand was added back in). I did this before the SLAM started about a...
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    SLAM Mustard Algae?

    Sig should include everything now. Ok, just checking, I can't "see" any algae at all. All I'm able to see if the remnants of what appears to be dead algae. There is no sliminess, green or yellow anything, just the dead algae in cracks. I'm not sure what else to clean. Does the order of...
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    SLAM Mustard Algae?

    So that's the thing, as I understand it algae is microscopic and we can't see it at all - only what appears to be dead algae accumulating in the cracks/low spots of the vinyl. We do think it is dead algae (as when you brush it or even while vacuuming it poofs up into the water and disappears). I...
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    SLAM Mustard Algae?

    Backstory: Had a brand new pool with algae in it. We could waste out everything at the bottom of the pool and within a half hour, we would have more sand/algae right back on the bottom. It drove it us nuts for the entire summer. Now: This spring (2022) I find TFP, and we run through a series of...
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