Im planning on adding CO2 to my tank so I can get some high demanding plants that I have always wanted to try but never had the appropriate set-up for them

I already have been able to research almost all of the equipment that I am planning to use except for just one eleiment of the set-up. I want to use a pH monitor and controller but I do not have any experience with equipment like that. I was wondering if anyone would have any recommendation of a good pH monitor and controller that I should be looking into

Thanks all.