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  1. U

    Speed of chlorine consumption

    Yes Sort of. It has a Perspex covering. Which is a bit like a green house.
  2. U

    Speed of chlorine consumption

    Does ph impact the speed at which FCl degrades over the longer term? my ph was running around 8 And I seemed to be using about 0.6 FCl per 24 hrs. I reduced the ph to around 7.5 and consumption seemed to drop a fair bit to half to three quarters of that. Now the ph has crept back Up to 8 The...
  3. U

    Chlorine and ph

    Thanks Chris, I used both a colour scale and also a lovibond photometer and I think both look to give similar results. I’m very confused by what’s going on though as I added another dose of hydrochloric acid 32 pct that I thought would give me a drop in ph of about 0.1 but seems to have gone...
  4. U

    Chlorine and ph

    So I thought I had things under control.. I thought that I’d try and bring my slightly high but stable 7.9ish PH down a notch to be 7.7-7.8. So I added some hydrochloric acid 32pct. initially the ph dropped but now it’s climbed to 8.1. TA was 180 pre acid. Now 160. What am I doing wrong - is...
  5. U

    Chlorine and ph

    A quick update. Until the next curveball comes in I think I ve got into a steady state. Cl demand seems to be about 0.6 per 24 hours. ph a touch on the high side at around 7.9 but I think this is just about ok? i put the cover on every day and only remove to swim, although wonder if that’s...
  6. U

    Chlorine and ph

    I I was more thinking of how big an issue transferring dirt into the pool is from not washing before getting in.
  7. U

    Chlorine and ph

    Generally as new pool owners we’ve been careful to shower before getting in. Any other downsides to not doing this e.g if sweaty. Is it just more cl use and more cleaning, like the scum line? Im Trying to work whether the hassle of showering is greater or less than the additional pool...
  8. U

    Chlorine and ph

    Another Chlorine related question What is the recommended approach to dealing with sun cream? Any special steps needed? I realise no sun cream in pool is the ideal but not practical in reality. I’ve a sand filter.
  9. U

    Chlorine and ph

    I’ll have another go as thought it seemed higher but really struggle to discern.
  10. U

    Chlorine and ph

    Would you say this is 7.8 or higher?!
  11. U

    Chlorine and ph

    so after a day of no swimming my ph seems to have come back down to It’s usual level of around 7.6 from 7.9. Is that realistic or have I got some duff readings going on?
  12. U

    Lesser of evils

    Sorry about this. I had tried to have a thread title for each problem as I thought that might be better. I’ll bring them all together into one thread “problems in the UK”. Thanks all for your help - sorry to cause confusion for everyone.
  13. U

    Lesser of evils

    Oops. 44000 litres, 11600 gallons.
  14. U

    Lesser of evils

    Hopefully my signature should now work.
  15. U

    Lesser of evils

    Following the excellent advice here I now use liquid chlorine only.
  16. U

    Chlorine and ph

    Sorry. So many questions!
  17. U

    Chlorine and ph

    The pool is inside a Perspex frame so no rain. Only dilution has been the recent large exchange I did to reduce cya from 300 to 60. I’ve Not added anything since then other than a handful Of cal Hypo mugs but now just liquid chlorine. Otherwise draining Is just backwashing. Which having only...
  18. U

    Pump run time

    Does the same apply to before a chemical levels check?
  19. U

    Pump run time

    Wasn’t sure where to post this in pumps or balancing. how long does the pump need to run to mix liquid chlorine after addition?
  20. U

    Chlorine and ph

    Is there a test? My pool is vinyl. So I think the issue would be with the pentair master temp.
  21. U

    Chlorine and ph

    TA Is my problem I think then. There was a good bit of splashing in the pool today. I best either use the dry acid I have or bite the bullet and get some hydrochloric. How bad is dry acid?
  22. U

    Chlorine and ph

    A good question to ask given my level of experience! But I have been testing 12to 24 hours later to see what next dose needs to be. My TA is on the high side at 150 or so.
  23. U

    Chlorine and ph

    Thanks. Something else odd is going on then.
  24. U

    Lesser of evils

    I should add, vinyl pool, pentair master temp heater, sand filter.
  25. U

    Chlorine and ph

    Haha. I wondered why it was so hard to swim. I meant I’ve not topped it up, so only addition is liquid chlorine plus bathers plus a few bugs.
  26. U

    Lesser of evils

    My TA is up at 150/160 level. Is it more or less bad to leave it or bring It down with sodium bisulphate? I’m a bit apprehensive to get hydrochloric acid as I’m a bit worried about storing it (young kids around) and using it is a bit daunting!
  27. U

    Chlorine and ph

    If I add liquid chlorine should i expect my ph to increase in the absence of other additions (ie not yet filled up with water)
  28. U

    Chemical safety

    Brilliant, thanks Richard
  29. U

    Chemical safety

    Having converted you liquid chlorine I’m struggling to pour a measured amount from a 20litre drum without it splashing quite a lot. How do you measure out this stuff safely?