It's tough with the cheap rectangular meters/pens, if I put them in a glass of storage solution the stuff evaporates. I think the trick is to get a meter with a round probe... It can slip through a grommet into a little bottle of storage solution.Gotta take care of the probe.
What model(s) are you guys using?Apera has given me no issues so far. My only gripe is the probe can easily be broken. Don't cheap out on meters if you can. It almost cost me my entire first grow. The cheap ones are good only for backup imo.
Cheap ass ebay specials....they work flawlessly if u care for themMy pH meter died recently.
I want to get something better (~$100), but am not sure. I am hearing scattered issues about Bluelab. I'd like something that can last, but also can't justify spending too much on it.
What do you use? Which brands do you like?