@tripaholic88 &
@jingo Well isn't this a fine predicament? I've just come back from the tent and my mixing station. I can't be sure, but I think just maybe some of my other plants are showing a couple of stressed leaves, and the claws on the Trainwreck have not straightened out. Anyway, to the tests. I just checked status of my pure RO water -it's 0 PPM and 7.8-7.9 on the pH. That's using my BlueLab Combo Meter. So then I rechecked the mix, and sure enough, it reads a pH of 5.3.
So my RO water goes from 7.8 to 5.3 when I add 1 ml/l sensi coco A&B and 2 ml/l of CO CaMg+ (1-0-0). Do I believe the hype from Advanced Nutrients, who say I should be fine. Maybe not so much, eh?
Am I correct in assuming that you guys would recommend that I get some pH UP and boost the raw RO water? And if so, what would be a good "final target" pH for the mix when I finally deliver it to the girls? Keep in mind, that all 4 plants showed a coco/soil pH today of 6.5 - 6.9 using the CWA pH8 Meter. And that was after getting the 5.3 mix.
Thanks a bunch for staying with me on this. I think we may be getting close.