Ok, I will toss in my 2 cents on the pH and CH issues.
pH: I think the wider range of 7.2-7.8 is more practical for the average user, as long as that does not cause any damage. The benefits of a tighter range can be discussed elsewhere. I am pretty sure I have suggested 7.2-7.6 in the past. And now that i think about it, are most scales not in increments of 0.2 ppm? So to ask for 7.5 would just be a guess anyway. AND, don't we always say a lower pH allows the chlorine to be more effective? I think of 'low' as 7.2-7.4.....
Hey, the smilies are back!
CH: I was not aware that there was an actual minimum for vinyl (and I just barely remember it for FG now that you mention it.) Just not to let it get TOO high because of scaling issues. (I believe on PF it was stated not to worry unless it got over 400 or maybe even 500?) Now, there may have been other discussions that I just did not follow on the merits of SOME CH in a vinyl pool.
pH: I think the wider range of 7.2-7.8 is more practical for the average user, as long as that does not cause any damage. The benefits of a tighter range can be discussed elsewhere. I am pretty sure I have suggested 7.2-7.6 in the past. And now that i think about it, are most scales not in increments of 0.2 ppm? So to ask for 7.5 would just be a guess anyway. AND, don't we always say a lower pH allows the chlorine to be more effective? I think of 'low' as 7.2-7.4.....
Hey, the smilies are back!
CH: I was not aware that there was an actual minimum for vinyl (and I just barely remember it for FG now that you mention it.) Just not to let it get TOO high because of scaling issues. (I believe on PF it was stated not to worry unless it got over 400 or maybe even 500?) Now, there may have been other discussions that I just did not follow on the merits of SOME CH in a vinyl pool.