What did your EC/TDS do? Nutrients buffer the pH. When a plant drinks the nutrients out of the water the EC goes up. When a plant drinks more water than nutes (or evaporation), the EC goes down.
herbie the love bud Reviewed by herbie the love bud on . ph went...down? This is something new, and another new problem for me guys; it's that time again :thumbsup: OK, in the three years doing this not once has my ph in my res DROPPED. What could it be? What's new?? I've been adding CAL-MAX (like calmag plus) I added it last Saturday and changed my res Wednesday. The ph didn't go down on Wednesday from the previous adding on Saturday. Rating: 5