J Jcann Member Jan 27, 2020 #1 Came down to water after lights on this evening and noticed something white on a couple of my Grodan blocks. Is this WPM??? Nothing on the leaves... I’m using RO and Veg+bloom nutes Last edited: Jan 27, 2020
Came down to water after lights on this evening and noticed something white on a couple of my Grodan blocks. Is this WPM??? Nothing on the leaves... I’m using RO and Veg+bloom nutes
