Coco Coir Brick (4-Pack) Gro-Plus 5kg Premium 10 Pound Coir Block Bundle
Coco Coir Brick (4-Pack) Gro-Plus 5kg Premium 10 Pound Coir Block Bundle is backordered and will ship as soon as it is back in stock.
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Coco Coir Brick (4-Pack) Gro-Plus 5kg Premium 10 Pound Coir Block B...
Description
Description
Gro-Plus Premium Coco Coir Brick (4-Pack) – 5kg OMRI Organic Low EC Mushroom Substrate Bundle
Stock up and save with this 4-Pack of Gro-Plus 5kg Coco Coir Bricks, designed for bulk mushroom substrate preparation and high-volume growing. Each 10lb compressed brick expands to approximately 80 quarts (20+ gallons) of fluffy, low EC growing medium — delivering over 320 quarts (80+ gallons total) across the full bundle.
Triple-washed, OMRI-listed organic, and pH neutral, this premium coco coir is ideal for CVG substrate blends, monotubs, grow bags, trays, and commercial fruiting systems. Whether you're running multiple bins or prepping large batches, this 4-pack ensures consistency, performance, and serious value.
Why Bulk Growers Choose This 4-Pack
- High-Volume Supply – Perfect for running multiple monotubs or commercial batches
- Triple-Washed & Low EC – Reduced salts for cleaner colonization
- OMRI Organic Listed – Approved for organic growing
- pH Balanced & Mushroom-Ready – Ideal base for CVG substrate
- Naturally Mold & Bacteria Resistant – Cleaner substrate foundation
- Space-Saving Compression – Stores compact, expands massively
Volume Breakdown
| Bundle Details | Amount |
|---|---|
| Bricks Included | 4 x 5kg (10 lb) Bricks |
| Expansion Per Brick | ~80 Quarts (20+ Gallons) |
| Total Expanded Volume | ~320 Quarts (80+ Gallons) |
| Best For | Multiple monotubs, bulk CVG batches, commercial grows |
Ideal for Mushroom Substrate & CVG Blends
Gro-Plus Coco Coir is one of the most trusted base materials for CVG substrate (Coco Coir, Vermiculite, Gypsum). Its low electrical conductivity and triple-washed processing reduce contamination risk while promoting strong, aggressive mycelial colonization.
Pair with sterilized grain spawn and quality vermiculite to create consistent bulk substrate for monotubs, grow bags, and fruiting chambers.
How to Use
- Place brick in tub or large pot.
- Add hot water and allow full hydration.
- Mix to proper field capacity.
- Blend with vermiculite and gypsum (optional for CVG).
- Load into tubs, trays, or grow bags.
Technical Specifications
| Material | 100% Coconut Coir |
| Certification | OMRI Listed Organic |
| pH Range | Approx. 5.8 – 6.5 (Neutral) |
| Electrical Conductivity | Low EC (Triple-Washed) |
| Total Compressed Weight | ~40 lbs (4 x 10 lb bricks) |
| Skill Level | Intermediate to Commercial |
Real Results from High-Volume Growers
Serious growers choose this 4-pack when running multiple fruiting chambers or preparing large CVG batches. The consistent hydration, clean processing, and reliable expansion make it a dependable foundation for high-yield mushroom cultivation.
Low Price Guarantee. No additional discounts apply. Need pallet quantities? Wholesale bulk options available.
Let customers speak for us
I have been using this coir for over a year. Always low salt, very important for earthworms, always fast shipping, and the best price I can find online.
I saw Willys video (I'm a Patreon 20$ subscriber) talk about whats in this blend and compared to others I've used this stuff adds steroids to my flushes. My JF strain was so dense and full it was crazy. GT, same result. Enigma is almost ready for fruiting and thats the most challenging one for me right now. Its a slow colonizer and I'm anxious to see how Willys Blend kicked these into gear. Not one contamination in my first 4 grows ever since I started 10 weeks ago, on New Year's day. Willys techniques have been my protocols every step amd its amazing how fun this is! Midwest is my go to for most of my supplies. Mush Love Genetics is so good to me and offers Veterans discounts for their spores. All good 5 stars and 2 thumbs up for Willys Blend!
Got it, I don’t remember what day but you can see in the picture I’m including that it’s definitely working! When it’s ready I have a friend who I’m going to share with
Received 2 pre inoculated fruiting block and could already see mycelial growth. Cut a small window as directed and placed into fruiting tent. Photos are 14 days after receiving the blocks.
I love how well packaged your products are and my mushrooms are always beautiful.
I have been ordering all my supplies from here for a year now with no issues products are excellent
currently have about 18 of these jars going and all of them are colonizing quickly. i’m a pretty new to all this and have had nothing but success with these. will keep buying, wish they were a little cheaper. i included 3 pics , all different jars that fully colonized in 3 weeks
...but I'd buy it again at full price.
Funny thing is, I haven't dried any mushrooms with it yet. My last grow ended up with Trichoderma. I've got another grow started, though.
However, I've made several batches of jerky and the machine works great for that.
I took a chance and dishwashed the trays and it was no problem, no melting. They're pretty heavy duty plastic.
Now the temperature settings range from 95° to 158°. Technically, jerky is supposed to dry at 160 degrees, but Google AI said it was fine and I ate it, a lot of it, and didn't die.
Still looking forward to my first mushroom harvest.
This is so handy and you can make any kind of supplements!
The spore bags were sterile, created awesome yields and I will continue to use their products!
Ordered a few bags of 5-grain, shipping was fast, inoculated 9 days ago, everything is LOOKING GOOD!
THANK YOU🙏
Happy so far quick delivery, nicely prepared and after 12 days Mycelium is starting!
contamination out of the 12 jars i inoculated, their still going so can’t say mic about fruiting yet but would definitely buy again
I bought the light to sterilize my mushroom lab. I had a bad Smokey odor in the lab due to overcooked wood chips. This light somehow created ozone and now the smell is gone.
I have always had a great experience with Midwest products. There delivery time is fast and exactly what I ordered. Not once has my substrate been to dry or have I had any contamination. I only have two tubs going right now but definitely will be expanding soon. Thank you for great products at affordable prices.
