pH keep shooting up

[Eddles]

Hi all,

I noticed that recently, the pH of my pool keep rising quite quickly, normally it takes forever to rise, but it seems to rise from 7.2 to 8.0 in the matter of one week. Only thing that has changed is that the pool cover has failed and is stuck open, would this cause the rise? I'm currently putting in 2kg of dry acid per week to counteract the rise. Everything else checks out fine, FC, CA, TA, CH all perfect. Thanks for advice in advance!

[Teapot1]

FC, CA,TA,CH are all perfect according to?
The pool industry loves to sell and is very accomplished at doing so. Meanwhile with the help of Chemgeek and others we worked on the science to get to the real situation. If the pH rises rapidly you have too higher TA.
My TA is around 40 which means I have not had to add any pH minus in a few seasons, 1 litre of acid has lasted about 3 seasons from memory. What are your actual water test results as perfect does cut it because you wouldn't have a problem. We do new perfect, one that suits your pool and your pocket.
CYA level is also needed as it controls what goes on in the water.

[Eddles]

Me and my Taylor FAS DPD test kit. To be precise, my TA is 130, not perfect but close. When I said CA, I meant CYA, apologies.

[Teapot1]

It wasn't a criticism, it was a request for information. The industry publishes some guidelines but they are wrong in some cases which is why we ask.
TA of 130 will cause you pH rises. Reducing the TA to 60-80 will dramatically reduce the pH rise.
Cant help further without a full set of water test results.