Recent content by Ranman60

To add on, I took the packet of 1940 ppm test solution and tested the blue lab meter and it was spot on. Thanks

I have a new Blue Labs Guardian Monitor meter, it's very nice, really liking it. But not sure if I'm doing it right. Ok, I have well water with a ppm of 120. Verified with a ph pen and the blue labs monitor. mix 1 liter of well water 4 ml of AN sensi grow A 4 ml of AN sensi grow B...