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Ultimate ½ Pint Substrate Jars  (12-Pack)

Ultimate ½ Pint Substrate Jars (12-Pack) (Ujar02)

4.94 stars, based on 238 reviews
(WINTER SALE SPECIAL PRICE!)Our 8oz Ultimate substrate jars are the quite possibly the best on the net! We have worked for over 15 years looking for perfection! We finally found it! We have combined special organic brown rice flour with...

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The jars were packed so well!

I accidentally dropped the box onto concrete! Not one broken jar.

Thank you!

½ Pint Substrate Jars

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Jars arrived quick, well packaged and yes tightening the lids is a must.
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Ultimate ½ Pint Substrate Jars (12-Pack)

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Pros:
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shipment was quick and contents were all in working order. great deal of thanks.

1/2 pint jars

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30 out of 36 colonized, I think the spores in the syringe were old and just failed to colonize. No contams, moved onto bulk substrate after 4 weeks. Going to try the jars that failed to colonize again and hope they take this time

1/2 pint jars

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Pros:
  • consistency
  • price
  • customer service
  • quality
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I've used MGK half a dozen times now and they're definitely the gold standard for RBF jars. Took advantage of their black Friday sale n saved 10 bucks. Kinda wish they had some kinda send back program so I didn't have to recycle the jars after. Great customer service, had an issue with contamination and they sent a discount code for the next set n I've had two successful grows since then. I'll remain a return customer for the foreseeable future. Only takes a few days to receive and if you follow the instructions you're bound to see the fruits of your labor.



The jars are also perfect for dunking. After washing them just fill them halfway with water n use two 3x3 Legos to keep the cake submerged, has worked wonders for rehydration.