So from what I read on here and other cannabis forums, your pH meter must not arrive with it's probe dry, as this permanently damages the probe apparently. I bought an oakton ph2 http://www.amazon.com/Oakton-EcoTestr-Waterproof-Tester-Range/dp/B004G8PWAU it arrived bone dry. Says in the manual to rehydrate with a 7.00 solution which I did and I guess everything is working as it should... but I honestly dont know 100% and that bothers me. For all I know all my pH readings have been off because of this? (i have no proof of that though, my plant is healthy enough i suppose...) I also emailed the company (Oakton) and they stated the same thing, simply rehydrate the probe with the solution..... So the information I have is very conflicting. Most forums say dry probe = a bad/dead probe.... So really need some advice here. Does anybody have any knowledge on these pH probes/meters and could soothe my worries? If your tools are actually off/broken, yet you are led believe they are in working order then you are going to be set up for failure. Thanks !