Using Rockwool As A Hydroponic Grow Medium

A quick guide on how to use rockwool (stone wool) as a hydroponic grow medium. Like the content? Then check out our book, The Absolute Beginner's Guide to Growing Cannabis, at https://amzn.to/2MC3TNb

Items I Mention In The Video:

Rockwool for Hydroponics: https://amzn.to/2E8Fwz3

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