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oldparr

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  1. @chem geek: My FC was 3 ppm, so I think the measurement was correct @gman: Yes, I have topped off 2 or 3 times. That can be the reason for the higher TA. What I think is strange is that the PH was rock solid 3 days before the addition of the Gentle Spa. But no sweat, now the water is perfect again. I enjoyed the almost full moon last night Regards, oldparr
  2. Gman, Unfortunately, I do not have the numbers prior to the addition of the gentle spa. I measured my PH 3 days ago and it was 7.6 (it was in the range 7.5-7.7 for a couple of months). Also, my TA was 60 2 or 3 months ago. Since then, I didn't measure it until now. After the gentle spa, it was 80. Now, I'm lowering it with dry acid. I use the CYA then bleach method (I add stabilizer right after the refill). I added 16oz of gentle spa using a postage scale and a plastic bag. Regards, oldparr
  3. I added 50ppm of Gentle Spa to my 550GAL tube and my PH went way up (>8.0). Now, I'm adding dry acid slowly. The PH still >8. Does it suppose to be near neutral?
  4. Thank you for the response Waterbear! I'll change it this week. Regards, oldparr
  5. Hello everyone, I have a 550 gallon SPA. The water in it is now 6 months old. I'm using Dichlor than bleach method. I use it twice a week, two people for about 1.5 hour each time. The water is perfect and my question is: do I have to change it now? My concern is the concentration of salt (Na-Cl) which I do not have a test for. How much salt will be bad for the hot tub? Thanks!
  6. Make sure you will hire a good electrician to install a good GFCI circuit. Good luck! Claudio
  7. Your CYA is way to high. Try to dump at least half the water and refill, bringing the CYA to 60. And take a look on the Nitro approach to water maintenance. I'm using Dichlor than bleach method and my refill is 5 month old with no problems. Water is cristal clear.
  8. I think it would be easier, but when I got my tub, I bought tons of stuff. One of them was 100% CYA. Now I have to use it. 100% CYA might be cheaper too, but I never did a good calculation on that.
  9. I used to do that (testing every month). Now after the first 30 ppm, I add 5ppm of CYA every month (using conditioner - isocyanuric acid 100%) and rarely test for it.
  10. And what about this one: http://www.spadepot.com/shop/Conditioner-S...s-P9308C64.aspx
  11. Just got out of the tub here in Dallas region (McKinney). For you in north east and Canada that will sound silly, but we had 7'' of snow!!! Wonderful tubing in snow!
  12. It happened to me too. At some point, I couldn't measure the hardness with a HTH test kit. Then I bought a Taylor K-2006 and I could measure it - the Calcium Hardness was 140ppm. I don't know what was wrong with the HTH kit. The sample didn't became red with the indicator. My tub's calcium hardness was 180ppm right after the refill. I think my cover let some rain inside the tub. It's raining a lot here at Dallas area.
  13. Wow! After cleaning the filter and bringing down the temp to 57Fº, my CD went to 8%. I think that I'm going to put 20ppm and leave it without a floating.
  14. Chem Geek, I didn't buy the tablets yet. I was thinking in buying the 1'' ones and use them with the feeder in the lowest setting. Do you think they are too large? I have a 650 Gal tub. I tested my CD a while ago. I'm going to clean the filter and test it again. Should I expect a significant drop in the CD with lower temps (lower than 100Fº)? Thanks
  15. I'm leaving for a 15 day vacation. I use the dichlor/bleach method and I don't want to switch to bromine. My plan is to low the water temp to 60F (the lowest my tub can go), put 20ppm using bleach and leave a floating with 4 or 5 tablets of thichlor. I intent to raise the TA from 50 to 80 - to control the acid that will come from the trichlor. I think that with 60F the CD will drop (now it is 30%) and the tablets will dissolve very slowly. I live in Dallas, so I'm not very concerned about freeze. My CYA is 35 and CA is 150 What do you think about that strategy? Claudio
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