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  1. calinb

    Spa Borate "Aeromatherepy" Stings Eyes?

    My spa tests 30 ppm for borate and my pool tests 50 ppm. Both pool and spa run around pH= 7.3, CYA=30, FC=3-5, and CC always under 0.5 ppm. I run my CA and TA lower in the spa than my Gunite IG pool too--at CA=150 and TA=50. Years ago I owned and maintained a spa and never used Borax. With this...
  2. calinb

    Epoxy Putty Fail (Suggestions and Advice Much Appreciated)

    My old Gunite pool has some chipping in the plaster around the returns so I decided to try to patch it with Leakmaster Pool Repair Putty. The problem is the putty sticks to everything better than the plaster! The instructions suggest not overworking it and just pressing it onto the damaged...
  3. calinb

    Need help with SWG cost analysis (specifically, salt consumption estimate).

    With the increase in LC prices this year, I decided to try to pencil out the costs of running a Jandy Truclear SWG. I lose about 2 ppm FC from my pool per day during the hot summer months. At current Walmart bleach prices (best non-sale LC price locally), that's about $1.50 per day! Last year I...
  4. calinb

    Stain Wars--Planning the Next Assault!

    I did a Metal Magic sponge test late last season and it indicated that I treat my stains with the maximum dose of MM. (Here are the highlights of that battle: Sequestrant vs. CYA Bound Chlorine ). The MM lifted nearly all my dark gray stains and I continued to treat with a maintenance dose of...
  5. calinb

    In The Dark About CC Removal!

    Or rather my spa is in the dark (full shade gazebo-covered). Given the near absence of UV light, I've searched these forums and found a few claims that aeration removes CC, but I'd like to hear what the chem experts have to say about it. Once the FC reacts with organics and makes the stinky and...
  6. calinb

    Sequestrant vs. CYA Bound Chlorine

    My recently acquired pool is topped-off with 4.4 ppm iron spring water and has been since it was last filled by tanker truck in 1999 (as far as I can tell from pool logs). Accordingly, I need to learn about sequestrants so I don't make the stains any worse than they already are (especially with...
  7. calinb

    Borates and Backwashing (watering terrestrial plants with backwash water)?

    We have limited water from a spring at home. Summers can be long and very dry. Accordingly, I back flush our sand filter into 5 gal. buckets and kiddie pools and let it sit in the hot sun for several days. After burning off the chlorine, I siphon the water to a few trees near the pool that...
  8. calinb

    Pre-2011 Aquabot Climbs Walls Like a Squirrel on Crack (solution).

    After cleaning up my swamp in the backyard of our new home (pool closed for 4 years before we bought the home), I decided to try out the Aquabot classic (a real pre-2011 classic rather than the newer "Classic" model) that was sitting in the pool room corner. I did not have much hope for it so...
  9. calinb

    CaCl + small amounts of NaCl and KCl okay? (Home Depot ice melt for $20 / 50 lbs.)

    My pool CH is only about 150 ppm so in my new and likely perpetual quest for cheap pool chems, I found this at Home Depot (pickup at local store). The packaging says 100% CaCl (photo): https://www.homedepot.com/p/Unbranded-50-lb-Calcium-Flake-Ice-Melt-Bag-VP-CF50BG/205668256 but I click on the...
  10. calinb

    Start SLAMing without Chlorine FAS/DPD test (my experiences--YMMV)!

    It seems to me that the FAS/DPD test precision and accuracy is only absolutely necessary to determine when to end a SLAM (perform the overnight FC loss test, aka "OCLT"). However, while waiting for deliver of your FAS/DPD test kit, a simple OTO "yellow" test and an "overkill" use of LC can get...
  11. calinb

    Hello from the upper Clearwater canyon, Idaho (above the little town of Peck).

    My family and I just bough an old homestead with a pool. I had a hot tub almost 40 years ago but never a pool and I'm climbing the pool learning curve! The pool is 17,500 gal. and it's been closed and covered for at least 3 years. Despite the cover, there's a decent amount of brown debris on the...