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    High CYA, first time LC user

    I just read this thread, congrats on getting this far! I would completely ignore Leslie’s. You know how to test. I also would ignore their advice, I don’t have a vinyl liner but the official pool school instructions tell you to pour muriatic acid very slowly in front of a return and brush...
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    Help!?! It said quick set—yet it’s never finished

    We have no idea what you’re doing from your description, you need a full set of test results from a TF100 or K2006C test kit. Buy one and read up in the pool school pages.
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    New salt water pool owner here need some guidance

    There is a great resource for you on this site, look at the pool school pages, everything explained from A to Z. It seems like a lot but once you absorb it it’s really not that complicated. DE in a sand filter? I’ve heard of people trying it but not ever that it’s required, that’s weird...
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    New Member - Few Questions

    In my area mine lasted 2 seasons - you’ll probably get that out of it too since you’re so much further north, shorter season and all. They say it’s safer to replace chemical after a year but I had no issues last season, storing them inside the house.
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    New Member - Few Questions

    So, welcome, and congrats on your pool. You should know that we don’t recommend test strips or pool store testing, as they can be wildly inaccurate. We recommend a good drop-based kit like the TF100 or K2006, which you need to get actionable results. We do not recommend tablets because they...
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    What is the minimum cya level recommended?

    Take a look at this page, it has the chart of recommended levels. https://www.troublefreepool.com/blog/2019/01/18/chlorine-cya-chart/
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    Weird deep end stains in new fiberglass pool

    Doesn't appear so, it's a finish flaw of some sort where grime accumulates. Hopefully not a huge deal in the long run as it's developed.
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    Weird deep end stains in new fiberglass pool

    Update, as I log in for the first time this year. The “stain” areas are clearly a smooth place in the gelcoat where there was less texture applied and some kind of clingy dirt accumulates during the season. Diving down and using a magic eraser on them seems to get rid of them. I tried...
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    Weird deep end stains in new fiberglass pool

    I agree, odd, but I feel like running down every possibility before I go back to BR will stand me in good stead. I expect we're going to end up sometime next year in exactly the same spot, which is an offer to refinish the whole thing with Ecofinish. Still not sure I want to do that to a new...
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    Weird deep end stains in new fiberglass pool

    So, Barrier Reef came at the beginning of the season after a lot of cajoling and complaining on my part. The crew drained the pool, couldn't figure out what the staining was, but when they power washed it to look at it better to figure out how to fix it, it went away. All good, I've been happy...
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    Weird deep end stains in new fiberglass pool

    I updated this in my build thread, sorry. The textured finish was either not applied in or at some point scraped off of these areas. I have as of yet not had a definitive response from Barrier Reef on this. My PB is following up and I am keeping on them, but TBH they are letting this and one...
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    New fiberglass pool - TFP levels?

    I have the same issue with my Barrier Reef pool. What I'm doing is to aim for the TFP end of the manufacturer requirement, at least for the once-a-month pool store testing that my manufacturer requires. In between I'm more relaxed about letting the TFP suggestions govern.
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    Weird deep end stains in new fiberglass pool

    The shapes are actually darker. Yes, tried a pool eraser, a puck, and vitamin C.
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    Weird deep end stains in new fiberglass pool

    He tried a pool eraser on a pole - no effect. And a couple more spots have shown up, also mechanical-looking. The only thing I could possibly have done is the robot - but it's a standard Pentair-branded Maytronics. There's nothing on the bottom of it that would have scraped the pool - what...
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    Weird deep end stains in new fiberglass pool

    Consistent with what all contractors think, I'm sure it will be, "it's supposed to be like that" and I'll be fighting with them and Barrier Reef for a year, which bums me out. (I am still fighting with a high-end stove company for a replacement of a cooktop installed last July that was...
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    Weird deep end stains in new fiberglass pool

    No luck with the Vitamin C either, I am bummed. I have notified my pool builder.
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    Weird deep end stains in new fiberglass pool

    I tried the puck trick, hard to tell. The area where I left the puck might be a little bit lighter, but it also might be my imagination. I turned the SWG up just in case it’s biological. Tomorrow, the Vitamin C tablet trick.
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    Weird deep end stains in new fiberglass pool

    There also was some gritty debris in the pool from some work they’d done on the concrete cantilever. If the robot scratched the pool with that, it would be a much worse answer. TBD I guess.
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    Weird deep end stains in new fiberglass pool

    I will try both. I have another idea what it might be. We had a heavy rain last week and there were a lot of dead worms in the pool, most of them had drifted down to the deep end before I ran the robot. Could be robot worm smushage. Doesn’t answer why it doesn’t come up with a brush, but...
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    Weird deep end stains in new fiberglass pool

    Those “lines” are tree debris from an odd tree. It’s not them, it’s the fainter lines towards the middle of the deep end. More visible in the first photo.
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    Weird deep end stains in new fiberglass pool

    My pool guys literally just turned maintenance of my new white fiberglass pool over to me this week, though it has been in the ground a couple of months. There are some weird geometric stains in the deep end that don’t come up with brushing. They almost look like something scratched it. I...
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    New fiberglass pool - TFP vs. manufacturer levels

    They do say pool store visits need to be on record. :-(
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    New fiberglass pool - TFP vs. manufacturer levels

    And probably manage to the end of the manufacturer ranges, where they conflict with the TFP ranges, as close to the TFP ranges as possible. But my experience is that pools kind of settle down where they want to settle down, so that might not be so easy. TBD I guess.
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    New fiberglass pool - TFP vs. manufacturer levels

    Sorry, "BR" means "Barrier Reef," the pool manufacturer. I had a bromine spa once, should have thought to be clearer. I'll edit. I have built and managed two prior gunite pools using TFP (or the old poolforum) recommendations, and loved the SWG on my last one. Just concerned about the...
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    New fiberglass pool - TFP vs. manufacturer levels

    I have a new Barrier Reef fiberglass pool where the equipment was just been started up, there have been no chemistry adjustments to date. The pool builder seems in no hurry to do anything except shock it (and it's not that green) until he's done, and is not in a terrible hurry to get there...