How To Spawn Bulk Substrate To A Monotub | MyShrooms (2024)

FAQs

How To Spawn Bulk Substrate To A Monotub | MyShrooms? ›

Spawn and bulk substrate should be mixed at a ratio if 1 parts spawn to 2/3 parts bulk substrate. If you have to much bulk substrate it could take to long to colonise and contamination could set in. Say you have 1l of spawn and you mix it with 2l ob bulk you would have a total of 3l to spawn to your tub.

Bulk substrates for monotubs are made from a combination of the following : manure, coco coir, vermiculite, and gypsum. Most modern growers are leaving out the manure and making their substrate from just Coco coir, Vermiculite and Gypsum, also know as CVG.

The more spawn used the faster the bulk substrate will colonize. Recommended spawn ratios are usually no less than 20% (1 part spawn to 4 parts substrate).

Then add a thin sprinkling of colonized grain spawn. Add another inch of substrate followed by more spawn. Keep sandwiching spawn in layers of bulk substrate until you've reached your desired depth. Make sure the lid to your monotub is also sterilized with rubbing alcohol.

We recommended 1 lb of colonized grain spawn for every 5 lbs of manure or hardwood sterile substrate. We also recommend using 2.5-5ccs per 3 lb injection port bag.

Avoid spraying your substrate directly but keep the sides of the tub moist throughout the day.

Spawn and bulk substrate should be mixed at a ratio if 1 parts spawn to 2/3 parts bulk substrate. If you have to much bulk substrate it could take to long to colonise and contamination could set in. Say you have 1l of spawn and you mix it with 2l ob bulk you would have a total of 3l to spawn to your tub.

We recommend using 30%-50% grain spawn as compared to the weight of the substrate. So, this 3lb substrate will need about 1.5lb of grain spawn. 9) Make sure the substrate is evenly distributed in your tub and the surface is flat.

All monotubs have holes cut or drilled into them, typically four to six, with two on each side of the length of the tub and one on each side of the width. The number of holes depends on the size of the tub, but usually one every eight or so inches is right.

Manure/Compost

Manure is the aged, dried excrement of horses, cows, elephants, etc. It is one of the most effective bulk substrates for dung loving species like psilocybe cubensis, panaeolus cyanescens and agaricus bisporus (Portobello). It is usually cheap or free if it can be located.

When to fruit bulk substrate? ›

Once your substrate is fully colonized you will need to decide how you want to fruit it. This can be achieved by leaving the substrate in the bag to fruit or moving it to an external location like a plastic tote, terrarium or mono tub.

You want to use a spawn rate of around 5-10%, which means you'll need about 2.5-5 lbs of grain spawn for each 5 gallon bucket. A 10% spawn rate will colonize the bucket faster, and comes with a higher chance of success- but you can easily get away with less.

You can tell when mycelium is fully colonized when the entire substrate (such as a jar or a bag) is covered with a dense, white, and fuzzy network of mycelial threads. There should be no visible uncolonized areas or contaminants, and the mycelium should appear healthy and vigorous.

Store your 50/50 substrate in a cool and dry location. 50/50 substrate can keep for up to 4 months in these conditions. There will be no need to rehydrated or sterilize the products a second time. If you need to store the product longer it can be refrigerated for up to 6 months and frozen for up to 1 year.

Hot water pasteurization is a method that works well for small-scale home cultivators, but can be costly when pasteurizing bulk substrate. This method involves submerging the substrate in hot water between 149 and 167°F (65 and 75°C) for one to two hours.