Seeds Here Now, Homegrown Cannabis Company, Blimburn, Premium Cultivars (Watch the address, there’s a fake site out there) Fast Buds and Royal Queen Seeds. I’ve had phenomenal customer service and amazing results from them all. If you’re in Minnesota, I can get you a couple/three to play with!

I’ve used a bunch of different meters over the years and have come to one conclusion. Trash. When a bunch of replacement Bluelab Guardian probes were bad brand new, I threw it all away. They’ll lie (even after calibration) after about 6 months to a year. Test drops have never failed me. Thankfully I’ve always had them to test against digital meters.

5 years? I don’t believe that at all. They don’t last more than a year even if maintained properly. It’s lying to you at this point.

NEVER buy a digital pH meter. NEVER. Throw that shit in the trash and use test drops.