Customer Reviews
Overall rating: 4.9 / 5 from 31 reviews.
I like this stuff… second order was a slightly different mix, less crushed oyster shells. I preferred the first batch.
Also have a seedling growing in the second order. Not sure how a seed makes it past pasteurization. ?
Delivery is fast
Jay D.
4/5
May 15, 2026
Premium Bulk Substrate Mix 10 LBS
Substrate seems to be working great. Has an extremely healthy feel to it! Will be buying more!
Justin W.
5/5
Verified
December 5, 2024
Premium Bulk Substrate Mix 10 LBS
Working great!! First flush coming in fast right now!!
Gerald J.
5/5
Verified
August 25, 2024
Premium Bulk Substrate Mix 10 LBS
Showed up on time. Perfect moisture and sterile as described. Will definently order from here again.
Chad P.
4/5
Verified
October 30, 2026
Premium Bulk Substrate Mix 10 LBS
High quality I will order more
Charles J.
5/5
Verified
October 23, 2026
Premium Bulk Substrate Mix 10 LBS
Other vendors I’ve gone through their sub was waaayyy too dry. These guys got the moisture levels down! My tub is doing great and thriving. Truly hydrated and sterile stuff! Def can trust these guys, and great pricing!
Marina Y.
5/5
Verified
October 21, 2026
Premium Bulk Substrate Mix 10 LBS
Very good setup! The materials are of good quality as well.
Thank you, C.T.
Charles T.
5/5
Verified
September 23, 2026
Premium Bulk Substrate Mix 10 LBS
It was fast and was not damaged.
James E.
5/5
Verified
August 12, 2026
Premium Bulk Substrate Mix 10 LBS
This is great stuff 👏 👌 👍🏻
Gregory N.
5/5
Verified
July 20, 2026
Premium Bulk Substrate Mix 10 LBS
First time doing a monotub and i started with 66qt. Mixed a 1lb bag of horse manure booster from Midwest, 10lbs of premium substrate from Microppose and 5 lb bag of colonized grain. After 4 days the whole tub is almost fully colonized. I recommend this top quality substrate.
Michael A.
5/5
Verified
June 5, 2026
Premium Bulk Substrate Mix 10 LBS
It looks great 👍🏻 👌 would highly recommend 👌
Gregory N.
5/5
Verified
June 1, 2026
Premium Bulk Substrate Mix 10 LBS
great product at a great price! I will definitely be back for more.
Carl B.
5/5
Verified
May 6, 2026
Premium Bulk Substrate Mix 10 LBS
Arrived as expected
Christopher C.
5/5
Verified
February 25, 2026
Premium Bulk Substrate Mix 10 LBS
Quick delivery
William C.
5/5
Verified
February 17, 2026
Premium Bulk Substrate Mix 10 LBS
Great yields
Shaina C.
5/5
Verified
January 20, 2026
Premium Bulk Substrate Mix 10 LBS
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Keith L.
5/5
Verified
December 17, 2025
Premium Bulk Substrate Mix 10 LBS
A+++ as always!
Thank you for great product and amazing service!
Matthew K.
5/5
Verified
December 12, 2025
Premium Bulk Substrate Mix 10 LBS
Great substrate great price. Quick shipping and no contamination out of 2 orders. Keep it up.
Jarred O.
5/5
Verified
October 13, 2025
Premium Bulk Substrate Mix 10 LBS
Delivered quickly. Looks good. I haven't I just injected it with a specimen. Ill let u know how it goes. But so far so good
Mario D.
5/5
Verified
October 4, 2025
Premium Bulk Substrate Mix 10 LBS
Great product, great price!
Brian M.
5/5
Verified
July 8, 2025
Premium Bulk Substrate Mix 10 LBS
Very pleased as usual
Kevin S.
5/5
Verified
June 21, 2025
Premium Bulk Substrate Mix 10 LBS
The employees of micropose are professional. I had an issue with my order and they promptly corrected it. Great customer service.
Matthew L.
5/5
Verified
May 28, 2025
Premium Bulk Substrate Mix 10 LBS
excellent product.
Scott C.
5/5
Verified
May 7, 2025
Premium Bulk Substrate Mix 10 LBS
Great substrate
Bryan L.
5/5
Verified
April 14, 2025
Premium Bulk Substrate Mix 10 LBS
.
Eva A.
4/5
Verified
January 21, 2025
Premium Bulk Substrate Mix 10 LBS
The substrate works as advertised. 🥳
Matthew O.
5/5
Verified
December 3, 2024
Premium Bulk Substrate Mix 10 LBS
Fantastic work. Fast shipping. Highly recommended. MP has the best products. I have been a loyal client for years now. MP is truly one of a kind.
Daniel G.
5/5
Verified
October 18, 2024
Premium Bulk Substrate Mix 10 LBS
Fast shipping, great product
Wade K.
5/5
Verified
September 11, 2024
Premium Bulk Substrate Mix 10 LBS
Fire
Chris P.
5/5
Verified
August 27, 2024
Premium Bulk Substrate Mix 10 LBS
Awesome product
Chris P.
5/5
Verified
August 8, 2024
Premium Bulk Substrate Mix 10 LBS
Very easy
Thomas R.
5/5
Verified
July 2, 2024
Premium Bulk Substrate Mix 12 LBS