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    CSI calculation in pool math

    Interesting idea about the units. When I put in 85 farenheit I get the numbers I showed you. I swapped it to Celsius and put in 29 and got .07 I think the app isnt actually changing the units for some reason as putting in 85 Celsius gives me the same 0.66 as 85 farenheit. Wish I had tried...
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    CSI calculation in pool math

    Wondering if the CSI calculation in the pool math app is correct? When I use the old pool pal app or the online pool calculator, I get a much better CSI with identical numbers
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    Clean opening after perfect closing

    Had the winter cover on from the last weekend in September until yesterday. Water temperature was 45f when I closed and 47f when I opened. To close brought chlorine up to shock level and added 40% polyquat algaecide. Made sure all the other numbers were balanced. There's still chlorine in...
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    Poor Mr. Squirrel! Now what?

    Scoop it out. If it's not 'leaking' or melted, raise your chlorine a little. If you still have FC, the Chlorine in your pool already took care of it If it is leaky or melted, raise to shock level (20ppm FC for cya of 50), and run your pump and filter for 24 hours on high to skim out any bits...
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    SLAM dunk!

    Only thing to add is: round your cya up to 40 so 5-7 is your target. Never let it drop below 3 or you'll be slamming again.
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    Itchy/dry skin after swimming in pool. Anything help?Hey

    If you find the pool still bothers you with proper pH, you can consider adding salt and/or borates to soften the water.
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    Test strip & bleach

    Re: Test strip & bleach How much have you been putting in? I use about a fluid ounce of bleach a day (30ml). If you're chlorine (from any thing, not just bleach) is too high, it will bleach the test strip and show none . How much solid chlorine were you putting in? If you were following...
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    Take water out of pool and bypass the filter?

    Waste should bypass the filter. If you added the cya 5 days ago, it should be dissolved out of there anyway. Another good reason to hang socks in front of returns instead of in the skimmer basket.
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    Help...Is 7 foot deep enough

    You shouldnt be diving head first (from the deck) into water less than 8 feet deep. Thats regulation (for public pools) in many places, although the Red Cross recommends 9 feet. For a diving board you need to also add in extra 1.5 times height, so if diving board is 1 foot above the pool, you...
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    Looking for guidance to a trouble free pool. Flying blind.

    Just pour one gallon of regular unscented bleach in every day until you get the test kit. Keep it skimmed, brushed, and vacuumed. Once you get your test kit, post up a full set of numbers and we'll go from there. In the meantime, if you want to do something constructive you can open up the...
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    Single speed pump vs variable speed

    I didn't buy a two speed, as I only run my pump when running through the solar heater. The faster your water goes the more you heat, so just making it to the roof won't make for efficient heating. If you only have your pump on 6 hours a day, I imagine you could have the solar on for 75% or more...
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    Help - ?algae bloom and ammonia

    1) once your FC hits zero, bacteria starts to grow... Unfortunately, you got the bacteria that converts cya to ammonia. Do you have the pump running fast enough to get enough flow? 2) don't add more cya until the ammonia is all gone. The bacteria that converted it is still in your pool and...
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    Frustrated Pool Owner

    Great.. Never let your FC drop below 3 for a cya of 30. Try to dose it up to 6 or 7 every night after you test. And then it should fall to 4ish by the next day. You can go a little higher than 7 if your expecting heavy use.
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    Want to switch from strictly liquid to some solid chlorine for remainder of season.

    According to an old Chemgeek post, he successfully kept algae away at 150ppm cya and 3ppm FC with biweekly polyquat use. I've never tried it, and can't vouch for that method, and polyquat is expensive; but if you're set on tablets it may work for your pool. Polyquat algaecides: Mode of Action...
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    is a pressure reading of 0 OK?

    3 simple solutions: Did you add DE after backwashing? Are you running on a very low speed? Try turning up your pump's rpm. What looks like zero on a pressure gauge could be 1 or 2, especially if you're using a gauge that goes all the way up to 60 psi. Is there water coming out of the returns...
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    Shoud I say something?

    I'd speak up. Even if they can't follow everything here, it's important that they understand why algae grows and know that they need to hire a pool guy who understands it too. Maybe you could end up with a new job?
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    Nervous about starting BBB

    In a small hot tub, you should actually be able to get by with just the Oto test and phenol red. You can get those at any pool store, or even Walmart. I realized that, other than when filling, I never use the good test kit on my hot tub. In a hot tub, you'll be keeping your cya low enough...
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    Nervous about starting BBB

    Didn't even notice you were in Canada too... Yes, finding the test kits locally will be impossible and ordering to a Canadian address expensive. If you know someone visiting the us, or you are, have it shipped to a parcel pickup in a border town. The extra hassle is worth the savings. It's made...
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    Nervous about starting BBB

    At my old house we maintained the tub the pool store way. Spent $30 or $40 a month on chemicals and stuff. Moved into a house with a pool, found this site and started doing the hot tub this way... i probably spend $20 a year now, and empty half as much. Here are some answers to your questions...
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    Accuracy of TFTkits Vials May be in Question...

    I don't think there is a problem to correct either. If the markings on your tube are off and you feel it makes a difference, you could easily get a syringe and measure a 10ml mark and draw it on. As a side note, I did just compare my cylinders with some other measuring tools I have. My chlorine...
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    Accuracy of TFTkits Vials May be in Question...

    1ml of pure water weighs a gram... 1 ml of pool water, not so much. We switched to the metric system in Canada without remeasuring everything. Just used metric going forward, although it did almost make a plane crash in the 80s when they filled the fuel in pounds instead of kilograms... Anyway...
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    Frustrated Pool Owner

    Ok. So you need more calcium in there. But we already suspected that from the tiles falling off. 220ppm is your minimum there, so shoot for 300ppm so you can backwash a few times without dropping below. TA looks a little high, but not unmanageable... Did you remember to wipe the tip of the...
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    Staring to figure this out....I think.

    That looks perfect. In a vinyl pool, too high of ch can contribute to scaling in the heater, too low doesnt really cause any problems. If your ph and ta are super low, having high calcium can make your pool 'less' corrosive, but that won't be a problem because your won't let your ph get too...
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    Pool Closed

    Wait until your pool is perfectly clear, and until you come back. Ascorbic Acid treatment will need you to keep a close eye on the pool for quite a while afterwards. Sounds like your algae is dead and you're just waiting for the filter to clear it up. If you haven't done so, now is the time to...
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    Security safety for 12' pool

    My completely non-law school advice, which is based on what my lawyer told me when I moved into a house with a pool... Don't scrimp on safety things like that. Pay for a good fence. Then you're covered for liability and moral purposes. If you try to cheap out or diy and something bad were to...
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    Pool Closed

    13 is your goal. 14 is okay. Anything above 14 backwash and restart.
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    Pool Closed

    You want to add enough to make the pressure go up by about 1psi... Start off with a backwash, note your clean pressure. Mix maybe a quarter cup with lots of water and pour it in the skimmer slowly. Check the pressure after a couple minutes and see if it went up by 1. If not, add a little more...
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    To winterize or not...

    I do keep mine open until the weather here is quite cold, below freezing. Not all winter because it hits -40 here sometimes and the heater can't fire up if it gets too cold out. It's enjoyable on crisp evenings, it almost feels like a hot tub. The only problem is, if your equipment breaks down...
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    How to get rid of the delay when switching from spa to pool mode

    Something to give extra cool down time for the spa heater, I would imagine. I would bet the delay correlates to how recently the heater was on.
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    New to us house with pool

    Hi Lynn, Cloudy water is a chemistry problem, not a filter problem. If your water is clear, running your pump less shouldn't make it cloud up as long as you are keeping your chemistry good, and your FC and cya in balance. If you're nervous, try turning it off overnight to start... You're...