PH problems

Hi guys.....

Suffering from nutrient lockout due to broken pH meter. (Damn Hanna meters)...SoG, DWC, bubble system. 1 set of 6 plants in bloom, 1 set of 3 as Moms. pH meter read 5.7, but can't POSSIBLY be correct. (I've ordered a new one)

Pics*:https://www.rollitup.org/marijuana-pics/index.php?u=35902

Any advice would be appreciated. Specifically, what to do now. (Sitting in tap water, no chems of any kind, at the moment.)

By the way, I live in an area where it's difficult to get chemicals, but I do have pH up/down and Flora Nova nutes. (also in Pics*)

Thanks........ (sob)

I usually use the 3 part GH nute set. But I have some of the Flora Nova nutes laying around; I decided to use them at half strength for a DWC setup. Anway that stuff lowered the PH of the water considerably. Not sure if it always does that as I rarely use it. But if it does then watch out cause your going to have some PH adjusting to do.

Half-strength with Flora Nova in a DWC, eh? Good advice...I'm guessing it's half because it 'sits' in the solution, right?

Methinks my babies were sitting in a straight up-acid....

Anyone know how to TREAT the problem? (Good info on the nutes, but I already knew I had pH problems....looking more for REMEDIES, thanks)