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  1. matj6876

    Empty pools & hydrostatic pressure?

    Because of significant scale issues I have to drain and acid wash my new (5 months old) pool. In short; After all of the cash & effort that has gone into completing it, I am terrified that when emptied it will pop out of the ground and be rendered useless. (~$25k to repair a popped pool)...
  2. matj6876

    Scale coating over the whole pool

    Thanks folks. A successful weekend! Nobody turned green, went blind, dissolved or was otherwise harmed by the water. Result! :-D Was really hoping to get some comments on Acid washing before I get it done.... Some folks at work have told me it will damage my plaster. Is anyone able to...
  3. matj6876

    Major revision to Pool Calculator

    Jason :idea: I don't know if this is a valid request but I'll throw it out there anyway... When the pool calc loads, it loads with the defaults across the board for both the now & target values: Size =10000 gal, FC = 4, Ph =7.5, TA = 100, CH = 260, CYA = 40, Temp = 84 It would be great to be...
  4. matj6876

    Scale coating over the whole pool

    Howdy folks Back from a business trip and my TF100's waiting for me at home - nice. :lol: It may just turn out to be the best $85 I've ever spent on my pool. Before ranting too much here's the numbers: FC/ 12 (SWCG was running 24 hours a day @ 75% for about 7 days - YIKES!!) CC/ 0.5 TC/...
  5. matj6876

    Scale coating over the whole pool

    I do remember reading the "CYA does not go away" thing so guess all my numbers above are probably invalid. And my reasoning a complete load of...... :!: Sorry, still learning :oops: :) Makes sense to me. I would guess that the CYA is still around 50 then. Will find out later this week...
  6. matj6876

    Scale coating over the whole pool

    @ Jason - Thank you, again! :-D @ Waterbear - Thanks for the advice. As for the CYA, I probably should have explained better; The numbers in my original post were from about 4 hours after the acid went in. I had previously been running the CYA at between 50 & 100 (again numbers are from test...
  7. matj6876

    Scale coating over the whole pool

    Thanks again guys To summarize my understanding of the above, and ask two last questions if you'll indulge me. It's best to stop this low pH nonsense today, for the sake of my heater, my plaster and my previously fair skinned, blonde haired now red skinned, no haired children! ;) That is a...
  8. matj6876

    Scale coating over the whole pool

    Thanks for your comments. My TF100 is ordered! A little distressed that if a sequestering agent is not required then my ignorance is what really has caused this. :( :? :oops: I have the chap from the pool company coming round tomorrow and will get his take again but will most likely stop...
  9. matj6876

    Scale coating over the whole pool

    Folks First post on this forum, apologies if the details, terminology or etiquette are not spot on. No offense is intended! :) I have a scale issue, a big one. History skip this if you are easily bored My pb completed and filled my pool back in March. When the pool was full I called them...