Extra Large Monotub Refill Kit – Big Yields, No Extra Bulk
This Extra Large Monotub Refill Kit is designed for growers who already have their gear and just need top-tier grain and substrate. It includes a 5 lb sterile Milo grain bag and a 10 lb CVG substrate block, both professionally prepared and vacuum-sealed. Use in a monotub—or skip the tub and fruit directly in the bag!
What’s Included:
- 5 lb Sterile Milo Grain Bag – Hydrated, sterilized, and sealed with a self-healing injection port and filter patch
- 10 lb CVG Substrate Block – Pasteurized blend of coco coir, vermiculite, and gypsum, hydrated to field capacity
Why You'll Love It:
- Massive grow potential with no wasted packaging
- Great for large monotubs or in-bag fruiting
- Clean, vacuum-sealed, and ready for your next grow
Quick Start Guide
| Step | Instructions |
|---|---|
| 1. Inoculate the Grain | Clean injection port with 70% isopropyl alcohol. Inject 5–10 mL of liquid culture or spore solution. Shake gently to distribute. |
| 2. Incubate the Grain | Store at 70–75 °F in a clean, dark space. Once 30-70% colonized , gently mix to speed up growth(optional). Allow 10–18 days for full colonization. |
| 3. Mix with Substrate | Combine colonized grain with the 10 lb CVG substrate. Mix inside your monotub or directly in the bag for fruiting. Flatten surface gently. |
| 4. Incubate | Store the tub or bag at 70–75 °F in indirect light. Allow 5–10 days for full substrate colonization. |
| 5. Initiate Fruiting | Introduce light and fresh air. Crack the lid (for tubs) or cut slits in the bag and cover with micropore tape for airflow if needed |
| 6. Mist & Monitor | Mist side walls or bag interior as needed. Keep surface moist and watch for pins within 5–7 days. |
Storage & Shelf Life
- Store sealed between 45–70 °F
- Best used within 30–45 days of receipt
- Do not freeze. Refrigerate only fully colonized bags if needed
Disclaimer
For laboratory use only. Not intended for illegal use. All sales are final, but we’re happy to help with any concerns on a case-by-case basis.
Don't Forget Your
Replacement Monotub Filters
Apply to your fruiting chamber to give your substrate fresh air while maintaining high humidity levels.
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LARGE Adherable Lid Filters 0.3 micron
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Let customers speak for us
Awesome product, arrived fast and clean.
Great shipping time as always! Love you guys!
This was way better than a normal CVG! I usually pastuerize my own CVG but i had no coco coir left , so i just bought this substrste because i had spawn ready to go and this was the quickest way to get that going! The micelium grabbed hold much quicker with this substrate . I was very surprised and extremely happy. I would buy again
They are great
Always awesome
Amazing product! Inoculated all 10 plates prior to my vacation! Headed home to check the status of the plates now! All plates seemed to have 100% sterility! Will definitely be purchasing from this shop again! Thank you!
Ive used this product with my research several times. This product is affordable and great. Thw packaging and shipping was awesome as always.
Great products from them every time. Always fast shipping and greay packaging
Reliable! Always can count on these guys!
Always! Quality products and very timely shipping. 10/10 so far with this company. Don’t sleep on these products.
Arrived three days earlier than what was stated
Excellent
Came with 2 even stacks, double sealed, stacks individually wrapped for.extra protection. Free of any issues or damage, no contamination and I'll be ordering again soon!!!
Highly recommended!
Great product. Very good pricing with high quality here at Mycologysimplified. I am very glad i found this company. As always the packaging couldnt be better. Double baged and vacume sealed. I inoculated the bag 3 days ago and mycelium has started. I will keep you posted with the substrate i get for this bag
Always a great product with great service!
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