CVG Substrate | CVG Monotub Mushroom Bulk Substrate | Coco Verm Gypsum

Our pre-sterilized, ready-to-use CVG Monotub Mushroom Bulk Substrate is ideal for mushroom monotub cultivation. This substrate is hydrated to field capacity, ensuring optimal moisture content for mushroom growth. This is the most popular substrate used for monotub cultivation.

Your Options:

1X– 1Kg or 2Kg pre-sterilized Coco Substrate

5X– 1Kg or 2Kg pre-sterilized Coco Substrate

10X– 1Kg or 2Kg pre-sterilized Coco Substrate

20X – 1Kg or 2Kg pre-sterilized Coco Substrate

Coco Coir + Vermiculite + Gypsum (CVG) Substrate: CVG is a popular bulk substrate that combines coco coir and vermiculite. These components offer excellent water retention with minimal nutrition. Gypsum is added for its sulfites and calcium, which supplement the mix and help keep the substrate aerated. Since mushrooms are 90% water, this substrate’s ability to absorb much water is crucial for sustaining mushrooms until the first flush. Sterilization of the substrate dramatically reduces the risk of Trichoderma contamination, a common issue for first-time growers. However, it’s important to note that contamination isn’t completely avoidable if your growing area and processes aren’t clean. Most nutrition for mushroom growth comes from grains added during inoculation, making a higher grain-to-substrate ratio beneficial for substrates like CVG. Rye is theoretically the best-suited grain for this substrate, balancing the missing nutrition, but it tends to dry out quickly and can be challenging for beginners to colonize. Millet is a more manageable alternative, offering easier handling for first-time growers. This CVG Monotub Mushroom Bulk Substrate is often called the best Monotub Substrate.

Note: Bag of coco best used asap or within 6 weeks of receiving. Longer its kept it starts to loose moisture and mushrooms are 90% water

If you are working with our Grain spawn and do not want to use up all the spawn in one go,  inoculated a grain bag with agar or inoculated a substrate bag with grain spawn for which you had to cut open the bag but have no way to seal the bag again consider to have our Large  Sealing Bag Clips

Source and Quality of Coco Coir

Our coco coir is sourced from a supplier that washes it free of salts and does not inoculate it with Trichoderma, Leading to faster colonization and fewer chances of contamination.

Find  another Mushroom Substrates in our store.

1. Take the bags out of their packaging as soon as possible, and keep them at room temperature, away from direct cold/heat sources.
2. Do not store uncolonized bags in the fridge; only fully colonized bags can be kept to slow down the fungus and delay fruiting until ready.
3. We recommend that the bags are colonized as soon as possible to minimize the chances of contamination or moisture loss.
4. Work in front of a flow hood or a still air box or in a room with no air movement with the workspace adequately sanitized.
5. Mix at least 15% grain spawn or higher of your desired species, mix it thoroughly in the bag, and let it colonize.
6. Incubate at 22-24°C in a dark spot and keep all the bags at a distance from each other to avoid excess heat.
7. Temperatures lower than 20°C make mycelium grow slowly, which could allow competing organisms to flourish. Temperatures above 24°C favor competing organisms rather than fungi, which increases the likelihood of contamination. Temperatures around 32-34°C will kill the mycelium.
8. Prioritise airflow over, keeping the bag in a dark spot. If there is no air current during colonization, the CO2 buildup inside the bag will not be able to be expelled out of the air filter patch. Excess CO2 buildup will suffocate mycelium, leading to slow growth and mycelium producing excess metabolite as a sign of stress, which changes the pH of the substrate and makes it easier for contamination to thrive.

This Products is shipped from Marrickville, Sydney.

Shipping Cost and Time—The shipping cost will be displayed on the checkout screen.

Handling Time—Packages typically takes 0-3 days to prepare for shipment. Unless otherwise stated as ‘Lead time’ on the listing as something different.

Please note that handling time may vary, especially during busy holidays or sale period.

Certain products, like Colonised agar plates or Sawdust spawn, Spray and grow kit, have longer handling times as they are made to order.