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  1. RDN

    Ph Test goes from 7.6 to purple quickly

    Hi, I've got a situation I've never seen in the 30+ years of pool ownership. When I test the Ph, it initially looks fine (~7.6). But then, after about 30 seconds, it turns deep purple. The Free Chlorine is about 4.4, CC is about 0.4. Water temp is 52.0 degrees F. Should I be concerned? The Ph...
  2. RDN

    New App is .. different

    I see the app has changed the past day or so. The interface is different, and now it flags CC; mine's at 0.2, which I thought was okay (SLAM guidelines say below 0.5). I did have a CC issue and just finished a SLAM BTW. Any idea why the change? Ron
  3. RDN

    July Vacation

    We are going on Vacation in July for 9 days. I don't have anyone who I'd trust to keep the pool balanced. I'm thinking of doing this: Add Polyquat Balance the pool. Turn off the heat a couple days prior. When we leave, shut it off and leave the floating cover on. What do you guys think...
  4. RDN

    Replacement Heater Question

    My old Teledyne-Laars Heater finally died - it's like 35 years old. So I'm going with a new Raypak Heater. I have two options - a regular Copper Fin Tube heat exchanger with Polymer (read: Plastic) headers, and a Cupro-Nickel Fin Tube heat exchanger with Cast Iron Headers. My pool is...
  5. RDN

    Ready to go! (well, once it warms up :))

    I just gotta say again - thanks everyone who helps folks like me out. I vacuumed the pool this morning, and except for the water being 55.2 Degrees, it is ready to go! Living in the Northwest, I just keep the pool full all year long, and balanced. Obviously it needs a lot less Chlorine in the...
  6. RDN

    Deck all set up!

    Pool of course is good to go (just a little cold still). Water is nice and clear. The only thing I haven't added is Boric Acid yet.
  7. RDN

    How to add Boric Acid

    Like the title says; I have a fresh fill on my 21K gallon vinyl liner pool. Brand new liner 2 weeks ago. TA is good at ~100, CYA is ~35 (boy it felt weird adding CYA after the mess I had 2 years ago to get most of it out of the old water); PH about 7.4. FC around 3 to 5, depending on the day...
  8. RDN

    Sodium DiChlor to raise Cyanuric acid

    Hi folks, I'm coming off my first winter in the Seattle Area after switching to Bleach last summer. Before that, I used to use the Skimmer Sticks from the local Pool Store. CYA was thru the roof a year ago. After a bunch of dilution and a SLAM, the pool is beautiful. My situation now is the...
  9. RDN

    Pool SLAM combined chlorine question

    Hi: New the the forum, but a long time pool owner (29 years). 16x32 in ground vinyl lined pool (~21K gallons), Seattle, WA area. Last year I chased combined chlorine, running my CYA up to about 150. I (partially) blame the high CYA it on a dry previous winter, typically we get a lot of rain...