All probes have a limited life, about 18 months.

now I find out that there is a brand that has a strip
when the meter can't be calibrated you just pull out a little more of the strip,not sure if you cut off excess.

I wouldn't worry about the dif. in conversion, its available as a comparison chart

I have a millwalkii tri-meter, but the probe still only lasts so long,I'm on my second $85 probe,wish I would have known what I do now,next probe is a generic off the net for $35
Daddynobucks Reviewed by Daddynobucks on . someone help a first timer pls its going to be my first hydro grow pretty soon. im doing a switch from soil to ebb flow buckets with a 55 gal. res. i was just wondering if someone could tell me what ph/ec meter is good for this setup. i want a meter that i can just drop the probes in and get a constant reading. also want a brand i can trust that any hydro store will have replacement probes if needed. i seen some hanna's out there but dont want to get those cause i heard they do a different conversion on the ec readings Rating: 5