Creeping PH

[algaspar]

My current readings are:

FC: 4
TA: 50-60 (it starts turning red at 5 drops, but the 6th drop makes it dark)
CYA 70
PH: somewhere between 7.9 and 8.1 as the test kit doesn't have any gradations between 7.8 and 8.2...
SALT: 3460 (Pentair says 3400 is ideal...; so I'll be adding 40 lbs to get it back around 3600)

My PH readings keep creeping up, I'll get it right at 7.5 or 7.6 and then two or three days later it will be above 7.8. Should I raise my TA to increase buffering as 60-80 is recommended for SWGs? The TA was around 70 last week. I have my SWG set at the lowest setting (20%) as my timer doesn't have any trippers at the moment.

Thanks!

Al

 

[jblizzle]

The SWG causes the pH to rise, that is normal. If you raise the TA, the pH will rise faster. You could try lowering the TA a little more to see if the pH stabilizes.

Do you have any aeration like waterfalls or spillover? They also contribute to rising pH.

 

[algaspar]

OK. Thanks! And, no, I don't have any waterfalls or the like. Since it isn't rising that rapidly, I'm thinking that I should just stick to adjusting the PH up with acid for now. Maybe next year when I open the pool, I'll leave the TA a bit lower.

Best--

Al