Recent content by MrXYZ123

  1. MrXYZ123

    Proof that CYA matters and what UV does to free chlorine

    Thanks. I am using BlueRayXL so it reduces the chlorine demand and that keeps the algae under control and water is good. We don't use the pool much so there isn't really a lot of chlorine demand and the water stays clear. I'll definitely agree that 1.6 is opening the door, but it is inky there a...
  2. MrXYZ123

    Proof that CYA matters and what UV does to free chlorine

    Ya I am going to 60 as soon as I can get my hands on some CYA.
  3. MrXYZ123

    Proof that CYA matters and what UV does to free chlorine

    I thought this was pretty cool. It shows how the chlorine in our 40k gal pool is destroyed by UV during the day and then how I verify that there is nothing consuming the chlorine overnight with what's effectively an overnight free chlorine loss test. The points on the graph from Sutro tests...
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    Screenshot_20230627_220536_Facebook.jpg

  5. MrXYZ123

    Where do you source chems, specifically LC?

    Exactly. That's what I do in Houston, $2/gal for 12.5% from Napco (they are in the TFP chlorine finder page too). I have 2-5gal carboys and get 10 gal at a time to use with my Liquidator. Where to find Liquid Chlorine - Trouble Free Pool
  6. MrXYZ123

    Pool math app not recoginizing subscription

    Thank you @Leebo I am back in business now 😀
  7. MrXYZ123

    Pool math app not recoginizing subscription

    @Leebo same issue here. My subscription autorenewed on June 7 but now it tells me I have no active subscription. However if I look at my google play account I see that I do and I saw the charge on PayPal.
  8. MrXYZ123

    Acid pump options - DIY - Stenner - or? (settled on Pentair Acid Tank w/Pump)

    Check this thread. I bought a Pentair Imtellicem tank that comes with a pump I just wired it to a relay in my hayward box. Not hard at all and I love it. I calculated that it doses 25 mL per run on my relay so I can just execute ad many times as I need to get the dose I want. Not fully automated...
  9. MrXYZ123

    Acid pump options - DIY - Stenner - or? (settled on Pentair Acid Tank w/Pump)

    Add borates! I love what it does in terms of shimmer to the water
  10. MrXYZ123

    Acid pump options - DIY - Stenner - or? (settled on Pentair Acid Tank w/Pump)

    @santacruzpool I got the power module but the tank hasn’t arrived yet. Is the pump 12 or 24 volts? I noticed the module has an output adjustment so wasn’t sure if I needed to dial it down to 12v. Thanks!
  11. MrXYZ123

    Acid pump options - DIY - Stenner - or? (settled on Pentair Acid Tank w/Pump)

    Hi @santacruzpool I’m looking to do the same thing you did but with a Hayward prologic panel. 2 questions for you if you don’t mind: 1. I wanted to confirm that you are just supplying power to the acid pump? Cut off the control plug and just use the pump power wires connected to the power...
  12. MrXYZ123

    Best Places to Buy Liquid Chlorine

    NAPCO went up to $2/gal after tax for 12.5%. Still a steal! I'm a frequent customer there now and it's about a 10 minute detour on the way to and fro work. I struggle with the carboys too but found a spout on Amazon that helps... I'm thinking about getting a 30 gal drum next summer to minimize...
  13. MrXYZ123

    What to use to reinstall tiles under waterline.

    Think that would work for a couple of flagstones on my spa ledge that's loose?