Hi guys and gals....
Has anyone ever heard of anyone using a few inches of spreader mat under a rockwool slab in flood and drain to give a bit more space for roots?
Thinking about it... has anyone just used spreader mat as a medium?
I'm currently in mid-setup of a vert sog in a 4'x4' tent.
Is be very grateful if anyone has any info.
All the best
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