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Richard
June 30, 2025
I bought these because I had an extra vial of culture in my refrigerator that I was sent. I usually do brf jars or the bags but I wanted to try this to spawn to bulk. I will have to say so far I'm impressed. They seem to be growing very vigorously. The culture I used was pretty clumpy so I divided it up between three jars so some jars may have gotten more culture than others but I see no contamination and they seem to be thriving. I would have to give it five stars because I think any contamination would have shown by now so if anything goes wrong from now on it will be my fault I strongly suggest for beginners to try this it is very fun and rewarding. I will update how i make out in a few weeks.
Cole we
June 6, 2025
Yup these have never failed to grow beautiful one stuff for me. 3 pack is kinda od though cuz my grow tubs are good for about 2 of these and then I’m stuck with a weird loner jar. But that does change that they work amazingly and never disappoint, super easy
brad rogans
May 31, 2025
With very little effort, I was able to get a colony going. I recommend this product.
mamato6girls
May 18, 2025
I bought several boxes of these grain jars and over half of them contaminated, two jars have mold when I opened the box and have not even opened or innoculated the jars yet. Won't buy again.
Customer
April 1, 2025
So clean and much easier than bags.
Tu M. Le
March 18, 2025
One out of three jars were contaminated. I suspected contamination on arrival due to a patch of rain the size of a quarter were clumped together when shaken. I decided to take my chances and inoculated anyway. Photo is contamination after 2 weeks.
Shawn
February 17, 2025
January 18 Update:So, as expected the "break and shake" took a bit of rigor, but I was able to distribute the agar slices and the colonized grains throughout the jar. And both jars ultimately colonized fully and nicely. At this point both jars have been transferred to substrate, and there is still no contamination (so far...no whammies!) in either batch...and the unused third jar still appears clean. So despite my concerns below...all's well that ends well....and I recently ordered another set of jars. I just received them, but they also appear free of contamination.Bumping the star rating to a well-deserved fiver. Recommend.Dec 18 (Orig):I ordered these, basically to use while I work to get my own jar/bag sterilization equipment and technique operational. And not a bad price for (reusable) quart-size sterile jars with grain. (A 4 quart option would have been nice though, and maybe some pint-size options, but minor gripe).I grew some mycelium from spore on agar (or rather, it grew). When I went to transfer the agar slices to these jars (two of three jars used so far, half plate to each), I realized that Myco Labs filled the jars a little too full, causing two issues.1. There was dried grain on the outside “shoulders and neck†of the jar, and opening the lids was a little “grittyâ€. These jars sat at for a month after delivery, without apparent contamination, covered by the “autoclave foil†and bubble wrap…so that’s promising. I tightened the lids after transfer well, but if there is grain on the outside/neck of the jar, with a gritty twist, I question the lid seal. Time will tell.2. There is little to no room for a “break and shakeâ€. The listing pictures show a fill to a ~1/2 inch below the jar “shouldersâ€, and even then I’d fill a little lower. I still have to remove the cover and foil on the third jar, but two of them were almost filled to the lid. It even took some rigor to get the agar slices “submerged†in the grain, and I can’t be sure of that on one of them. I suppose I could have dumped some grain out, but at the time of transfer, I did not want the jars open for a second longer than necessary....let alone fiddling with dumping. Again, I’ll see how this plays out, but even with a syringe inoculation, the “break and shake†would be tight.I can’t rationalize grain on the outside jar necks…but I somewhat understand (assumingly saturated) grain expanding (a little) during sterilization…but Myco Labs need to work that out to a full but "headspaced" level. I'll add pictures later, but I also see overfilled jars in pictures from other reviewers.
sipher7024
December 12, 2024
I've tried bags and Rye substrate jars, which have been good, but this 5 grain mix blows them away. My jars were fully colonized in 22 days. After about 10 days I shook them up by banging them against a tennis ball, works great for me! I admit I did not innoculate with glovebox methods. I used an alcohol pad and that's it. So far, I've had 100% success rate with no contamination. However, I would suggest following the recommended sterile methods, better safe than sorry. Well worth the cost. These guys make cultivation way easier and faster.
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