I really want to buy a BlueLab Guardian monitor for my next reservoir but I have read a number of reviews that say the pH probes don't last very long and wanted to see if any of you have used them or are using them or know people who use them before I fork out that much money. My biggest question is will it work for daily pH monitoring if I leave the probes in the reservoir 24/7? Most pH probes aren't meant to be left in a solution other than the storage solution so I imagine these would be the same thing, but they appear to be designed for just that. Anyone have any thoughts or ideas or input?
This is the monitor I am referring to since I know they make a few different ones:
This is the monitor I am referring to since I know they make a few different ones:
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