Do I need To Ph R/O Water ?!?!

If I'm running an organic soil mix ( Happy Frog, EWC, Recharge, Ancient Forest) do I need to Ph my R/O water when plain watering?

And Would I Ph my water if I used an organic nutrient in the water?

Appreciate any info, I'm starting a grow next week, Thank you!

I used to water with R/O water and I did not PH it. I ran into Calcium and Magnesium deficiency’s and PH problems that were very difficult to fix.

Now I use tap water (sometimes I let it sit overnight sometimes I don’t) and I always PH my water and haven’t run into anymore deficiencies or PH problems.

My experience says YES always PH your water
Good luck to you

RO + CaMg is the best.

No way to know where the hardness minerals that municipalities comes from, and/or what contaminants they contain