A log of my first experience growing cubes. Purpose of this is to record data throughout the process and throw out my thoughts & questions if any vets want to chime in.
As I have harvested my first ever fruits, I would like to thank everyone who chimed in here and in other threads as well. This site and the people on it have been a tremendously valuable resource.
I'm mild OCD and major ADHD so excuse any over-engineering. I intend to learn along the way and will likely make mistakes as lessons for the future.
1. Everything is housed in my grow tent for privacy and containment. 2. 7500k Grow lights on a 12/12 cycle are zip tied to the racks above the tubs. 3. Fruits for the log will be born from 2 MSS I got from an online vendor.
My Initial Set Up:

My Most Recent Setup: I moved away from the Max Yield Bins and stick with 6qt shoeboxes to dial in genetics before larger tubs. Moving to 12qt shoeboxes in my next phase.


Shoebox Set up: After pinsets have formed and begin to reach the sterilite tub lids I’m placing upside down boxes on top to allow light penetration to direct growth and additional room for fruits to grow.

Agar Notes: Originally I started with premade PDA Agar Plates which I mistakenly did not streak and only allowed the solution to roll around on.




I stuck with PDA plates for initial transfers.


Growth on these was fairly decent and no visible satellite contamination formed through their colonization however the mycelium growth was not very uniform.


Aside from a few plates which came out awesome.

I got creative and decided to make a high-ER nutrient Agar to compare to my PDA plates. MEPYAC Agar: This is Malt/Peptone/Yeast/Charcoal Agar. Recipe: - 500ml distilled water - 9g Agar - 7g Light Malt Extract - 0.5g Peptone - 0.5g Nutritional Yeast - 1g Activated Charcoal


This recipe tremendously slowed the mycelium growth and caused many inconsistencies even after multiple transfers and cutting the total nutrients down by 40%~ in a second batch.




I decided to add in HG PP5 plates due to their lessened need of parafilm. Here were my best plates from this crappy formula.


Ultimately I have most recently gone back to a simpler recipe. MYA Agar: -10g agar/7g Light Malt/0.5g Nutritional Yeast. Aside from the sediment the nut. Yeast leaves, it appears to be more conducive to germination.


Grain Prep: I have chosen WBS as my first choice of grains. My first attempt with prepping the WBS was the flash-boil prep method. -Rinsing the wbs a few times until water is clear -Boil a pot of water, turn off the heat -Air dry grains until they don’t stick together -Place WBS in water with a lid and let set for 30-45 minutes. -Jar the WBS and PC at 15 psi for 2.5 hours. I inoculated the jars via agar plate slices with a flame-sterilized scalpel in my SAB.




I noticed the grains to be too dry with a few stalled out jars using this method. Here is an example of a colonized-yet stalled jar from being too dry:
 In attempt to “reinvigorate” the jar I put some tap water in a mason jar and ran it through the PC’d at 15psi a few times and poured roughly 20ml of sterile water in the jar. I then shook the jar once every 24hr for 3 days resulting in the mycelium density exponentially increasing. Looks slightly bacterial, but fruiting opportunity is greatly increased with stronger mycelium obviously so I spawned in anyways.

A few of my other jars for reference:






After experimenting my future WBS preps will include a 24hr soak and an optional 10-20 minute simmer if still not hydrated to my liking. Due to the grain inconsistencies I will be switching to whole race oats for my next grain jars.
Initial Shoeboxes Progression: Utilizing my 6qt shoeboxes I mixed 1qt colonized WBS with 2qt CVG, slightly compacted, a loose pseudo-casing of roughly 0.5qt CVG, misted the casing, and left the lids on until pinsets formed.








Added a few more tubs.

First pins have begun to form 16 days into spawning


Pins begin to take shape 18 days in.

19 days in and this fruit is growing rapidly. I pulled it for a clone due to this however many people argued it was an abort. The tubs I will spawn in the future with its genetics will tell.


21 days into spawning and the difference between the two tubs is very apparent.


23 days in and the fastest growing fruits have begun to crack. Some said this was due to to much FAE.
 Upon comparing the flushes’ fruits in their entirety, I determined that was not the case after sealing the tub’s creases and comparing it the simultaneously developing tub. I attribute the cracks in this batch due to their rapid growth as the fruits in this shoebox grew twice as large and twice as fast compared to the other. Compared run at the same age and conditions:

25 days in.

26 days into spawning, my first multispore flush.

I then bottom-watered about half way with distilled water 2 days post-harvest(28 days in) due to lack of additional pins forming.
Now 7 days after soaking the substrate, 35 days in, second flush has developed.


36 days in and my second flush is ready and harvested.


While there are still a few pins slowly developing, I have harvest two flushes from each 6qt shoebox. Total wet yield was roughly 550.
Additions Not Yet Being Utilized: - 2x 20qt Max Yield Mono Tubs - 2x 120ml CPU fans - 2 Cyclical timers for the fans for FAE - 1 reptile fogger - Ink Bird Humidity Sensor
Future clones: Due to my first cube grow being a multispore lottery, I took tissue samples from the fruits I favored for most consistent future grows. My process for these clones was as follows: -Harvest Fruit based on characteristics -Manually split fruit inside SAB. -Use flame sterilized scalpel to take sterile tissue sample from inside of stipe/stem to avoid spores and contam -Placed tissue sample on MYA agar in SAB. -As agar germinates, I have water agar HG plates on standby to clean them up if necessary. Here are my cloned fruits:
Clone 1: very first pin to form, formed and grew faster than any other fruit.

Clone 2: Fruit with the thickest stem, TW genetics present with wavy cap.

Clone 3: Most overall decent fruit. Tall & thick.

Clone 4: Twice as tall as any other fruit, leucistic variety with lighter colored cap.

Clone 5: conjoined based(cluster?), hearty, umbo point on on cap.
Edited by MicroMycelium (08/14/23 12:35 PM)
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