Rock wool

Beblunted

Well-Known Member
Hello once again,
I'm starting some new seeds, got some rock wool, how do I use this? Any pointers on it

Also any one got a way other then ph down mix to drop the ph
 
Okay any one got some pointers on this I've never done it do I wait for roots to show from the side? And up in to dirt or what I've wanted to try it any help appreciated
 
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