Monotub Refill Kit – Substrate & Grain for Dung-Loving Mushroom Grows
Already have your monotub dialed in? The Redwood Mushroom Supply Monotub Refill Kit includes everything you need to run another grow—just add spores or liquid culture. Designed as a perfect follow-up to our full monotub kit, this refill pack includes two bags of ste
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arrived quickly and came with two bags. I thought it just came with one.
S
Spence · July 28, 2026
Great Product
This is my 2nd time getting the mono tub refill kit. Very well packaged and great quality product. So far every strain i use with it seems to like the substrate and grain bags quickly colonized. Will be back for more