Is the ironhead formula working on rockwool?

  • Thread starter flipflop64
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Hey people,
So i have all this GHE nutrients left over rn from growing in coco for a while.
The ironhead formula always worked amazing for me but i want to go back to rockwool for a while. Does the ironhead formula work on rockwool too? I didnt really find anything about it.
What are yall giving your rockwool plants?
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