S sosincere Well-Known Member Nov 17, 2022 #1 Found this guide very useful, especially since I started using the light meter and the ph and ppm pens they use... Attachments CH 2 VEG 101 BensNursery.pdf 2.9 MB Views: 37
Found this guide very useful, especially since I started using the light meter and the ph and ppm pens they use...
