2 RO water questions

[Archman66]

Do I need to add conditioner such as prime to R/O water?

Also, what is the proper way to buffer R/O water to a pH of 7.0. Should I add just acid buffer, or acid and alkaline buffer in the ratio recommended by the product label ( I have Seachem Acid and Alkaline buffers, so the ratio would be 1:2 for a pH of 7.0). Or should I not buffer at all since the water already in the tank already has some buffering capacity? Although I suspect after numerous water changes, it would lose its buffering capacity.

[PostalPenguin]

No need for conditioners on RO water. Whats your pH of the RO water? I believe they have neutral buffers out there.

[Archman66]

6.0 or less (its the lowest color on the color chart). I bought the expensive water from the LFS. This time I got it from the self fill Culligan machine at Wally World. Tested it before using it, and it has the same parameters as the more expensive LFS water. This time I added both buffers in a 2:1 ratio. It still tested low, so I added a little extra alkaline buffer. Got it to 7.2 and figured good enough. I didn't want to keep adding stuff ad infinitum.

[Mvjnz]

If you want neutral water, why use RO?

You could always find a ratio of mixing tap water with RO water that gives you neutral pH.

[Archman66]

More info please. How? I know you can do that with kH an gH, but how do you do it with pH?

[Mvjnz]

Experiment, add tapwater and keep testing the pH until it's right, then let it sit for a day or two and check it again and adjust as needed.