We have resently added hygrozyme to the mix and when the plants are young the PH is stable. Seems as the root system is larger the PH wants to drive way down into the 4's. Don't know why but the more the tubs are topped up the more stable it gets. We had root problems and not the PH problem before. I guess that's why they make up and down.

If you don't see or smell problems with your roots you most likely don't have problems.

Have you added anything new ?
LOC NAR on probation Reviewed by LOC NAR on probation on . PH ACTING STRANGE DOES ANYONE KNOW WHY MY PH IN MY NFT SYSTEM IS GOING DOWN AND NOT UP, IT HAS ALLWAYS GONE UP FOR THE LAST 8 YEARS OR SO, BUT THIS LAST SIX MONTHS OVER 3 GROWS HAS BEEN GOING DOWN. I DO CLEAN MY SYSTEM AND THE PLANTS ARE GROWING AND LOOK FINE. BUT I READ IF ITS GOING DOWN AND NOT UP, THERE IS A PROBLEM, I HAVE CHANGED NUTRIENTS ON THIS GROW BUT STILL THE SAME AND THE WATER IN THE TAP IS STILL AT 7PH SO I DONT THINK THAT THE WATER IS FUNNY. ITS REALLY WEIRD. Rating: 5