When quoting PPM you say which scale you are using, or much confusion and mistakes may be made!
500 scale, 640 scale or 700 scale
Blue Lab = 700 scale
Milwaukee = 500 scale
Hanna = 500 scale
Oakton = 700 scale
Eutech = 640 scale
Fertilizer companies also measure in different scales...
Dwarf Amnesia Stone 99 Auto in my DIY COB LED PC Case
Amnesia Stone 99 Auto
DIY PC case with DIY carbon filter
PC Case cab DIY COB LED (Dimmable) & DIY Carbon Filter
6 Dinafem Fruit Auto's HST'd canopy top @ 9 -10 inches in a 2' x 3' cab. There is no net or mesh used, just...
8-9 zips from 150w is a great return.
Shame they aren't for sale any more!
Can't wait to see what is next to come from Grow Northern.
Hi TaNg, Keep rocking it mate!:bigjoint::leaf::peace:
Lamsbread AKA Arty Zan
GN make the Light and Dutch Passion own CrazyLED's who are a reseller for the GN lights. Dutch Passion has bee a long time reseller of Grow Northern lights. In the past Dutch Passion sold the Ms004 & MS006 lights which were manufactured by Grow northern. Mystery cleared up!