19Purpleking69
Member
good stuff
good stuff
good stuff
Now that's good stuff. My pen just came in so I'll get right on it. The pen is for liquids, is there something better for soil testing than a 2 or 3 pronged cheap meter? Looks like I need something to calibrate the pen with, what do I use? It doesn't say in the instructions. It just says to use "something" metered at 6.8.i remember my first grow my plants were big and healthy and about to swap to flower and they got rusty and started yellowing thought just like you and it was ph because at the time my water was 7.2, and my soil ph meter was reading low 6. i started to flush with my ph to 5.8 and immediately bounced back and never had a problem since.