It's used by farmers and inspectors to check sugar content and nutrient absorbation in plants.

Check on eBay, I paid only about 80 bucks.
Zandor Reviewed by Zandor on . Zandor, pH "regimen" from the other thread..... Zandor, I posted this question to you on another thread, but posted this new thread to get your attention. This could be very valuable information to someone like me who likes to constantly monitor and adjust pH levels in my ebb n' flow. wow zandor, that's great knowledge. Tell me.... what is your pH "regimen" as to certain pH at certain stages. I have a constant pH monitor, and although I get a slow steady rise in pH especially after a nutrient change, I keep between 5.6 and 6. I Rating: 5