For scale, the coarse sand on top is 2-3mm. The mix the seedlings are in is full parts of vermiculite, perlite, and pumice, and half parts of coir and coarse sand, with everything screened to roughly 2-3mm. The seedlings are now uncovered with an overhead fan on low speed.
Are there other changes I could make to combat damping off? Will a systemic copper fungicide help at this point?
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For scale, the coarse sand on top is 2-3mm. The mix the seedlings are in is full parts of vermiculite, perlite, and pumice, and half parts of coir and coarse sand, with everything screened to roughly 2-3mm. The seedlings are now uncovered with an overhead fan on low speed.
Are there other changes I could make to combat damping off? Will a systemic copper fungicide help at this point?