Grodan Improved Mini-Block MM 40/40 1.5" Unwrapped (2250/Case)
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Grodan Improved Mini-Block MM 40/40 1.5" Unwrapped (2250/Case)

Grodan Improved Mini-Block MM 40/40 1.5" Unwrapped (2250/Case)

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GrodanSKU: Q102184
$ 582.95 $ 599.99
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Grodan Improved Mini-Block MM 40/40 1.5" Unwrapped (2250/Case)

The Grodan Improved Mini-Block MM 40/40 1.5" Unwrapped (2250/Case) is a compact professional stone wool block designed for propagation, young plant production, and hydroponic cultivation.

Each Mini-Block measures 1.5 × 1.5 × 1.5 in, with technical dimensions of 40 × 40 × 40 mm (4 × 4 × 4 cm), and provides approximately 0.064 L of stone wool substrate. Each block includes a centred planting hole for compatible rooted plugs. The carton contains 2,250 blocks.

Key Benefits

  • Professional Grodan improved stone wool Mini-Block.
  • Commercial size: 1.5 × 1.5 × 1.5 in.
  • Technical dimensions: 40 × 40 × 40 mm (4 × 4 × 4 cm).
  • Approximately 0.064 L of substrate per block.
  • 2,250 blocks per case.
  • 45 blocks per strip.
  • 50 strips per carton.
  • Center planting hole.
  • No grooves on the bottom.
  • Uniform water and EC distribution.
  • Ideal for propagation and young plant production.
  • Suitable for hydroponic and controlled-environment growing.

Why Choose the MM 40/40 Mini-Block?

The MM 40/40 provides a compact, uniform root zone for young plants before transplanting into larger Grodan blocks or another growing system.

Its small substrate volume responds quickly to irrigation adjustments while providing a consistent balance of moisture and air for early root development.

Grodan Improved Technology

Grodan Improved blocks use an optimized fibre structure and Advanced Wetting Agent to promote more uniform water content and EC throughout the substrate.

This helps support consistent saturation, root development, and irrigation control from propagation onward.

Strip Format for Efficient Handling

The MM 40/40 blocks are supplied attached in strips, making them easier to handle during propagation and transplanting.

Each strip contains 45 Mini-Blocks, with 50 strips per carton, for a total of 2,250 blocks.

Ideal Applications

  • Seedling propagation
  • Rooted cuttings
  • Young plant production
  • Hydroponic cultivation
  • Commercial propagation
  • Indoor horticulture
  • Commercial greenhouses
  • Controlled-environment agriculture

Product Specifications

Specification Details
Brand Grodan
Product Improved Mini-Block MM 40/40
Type Stone wool propagation block
Commercial Dimensions 1.5 × 1.5 × 1.5 in
Technical Dimensions 40 × 40 × 40 mm (4 × 4 × 4 cm)
Substrate Volume Approx. 0.064 L
Planting Hole One centred hole
Bottom No grooves
Format Blocks attached in strips
Blocks per Strip 45
Strips per Carton 50
Quantity per Case 2,250 blocks
Growing Media Stone wool
Primary Use Propagation and young plant production

How to Use the Grodan MM 40/40 Mini-Block

Hydrate and condition the blocks according to your propagation and nutrient program before transplanting.

Insert a compatible rooted plug or young plant into the centred planting hole. Maintain appropriate moisture, EC, pH, temperature, and humidity during early plant development.

Once a strong root system is established, the Mini-Block can be transplanted into a larger compatible Grodan block or another suitable growing system.

Frequently Asked Questions

How many Mini-Blocks are included per case?
Each case contains 2,250 blocks.

What are the dimensions?
The commercial size is 1.5 × 1.5 × 1.5 in, while the technical dimensions are 40 × 40 × 40 mm (4 × 4 × 4 cm).

How many blocks are on each strip?
Each strip contains 45 Mini-Blocks.

Does the Mini-Block have a planting hole?
Yes. Each block has one centred planting hole.

Does the bottom have drainage grooves?
No. Grodan specifies that MM Mini-Blocks have no grooves on the bottom.

Can the Mini-Block be transplanted into larger Grodan blocks?
Yes. Once rooted, it can be moved into a compatible larger Grodan growing block or another suitable hydroponic system.

Order Confirmation

As soon as your order is placed, an order confirmation will be sent to the email address you used to place the order. This means we have received your order and payment. Payment is captured as soon as the order is placed. In rare cases, if the product is on backorder or unavailable, we will contact you and ask if you would like to wait for the product to become available, switch your product, or have your payment refunded. If the item is available for shipment we will submit the order for processing and arrange shipment. Please see current estimated lead times on the product page for each product.

Shipping

Most products ship within 1 to 3 business days. Some items might take longer as they are delivered from our warehouse in Vancouver. As soon as we receive your tracking number, we will send it over to you.

Free Shipping

Free shipping is available across all provinces throughout Canada for orders over 149$.

International Orders

Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or other couriers. Most quotes can be obtained at checkout. If not, you can email us at info@canadagrowsupplies.com for some more information on shipment. Items shipped internationally from the USA may have VAT, duties, taxes, and/or local charges due at delivery. These charges are the responsibility of the customer and not Canada Grow Supplies Inc.

Cancellations

If you need to cancel your order, we recommend reaching out to us ASAP. We charge a 2.9% (credit card), 3.5% (PayPal), 4.0% (PayPal International), 4.1% (American Express), or 6.5% (Shop Pay Installments or Sezzle) order cancellation fee after the order was received. We can accommodate most requests, but due to the different time zones and schedules that our warehouses ship from, sometimes the cancellation request may not reach the warehouse in time before the product ships. Once the item has been arranged to ship or has shipped, the package will be treated like a 'return' and is subject to ship-back fees and restocking fees. If you purchased 'Route Package Protection', this can not be refunded after the order has shipped.

Returns

In order to make sure you are completely satisfied, we can send you a return label within 14 days of receiving the order. This is to guarantee that you are happy with the product. Some products might require a 10-25% restocking fee. Please visit our full return policy.

Why Canada Grow Supplies?

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1. We’ve had thousands of shipped orders and satisfied customers.

We started our business in 2020 with the intention of creating a one-stop shop for growing supplies without letting customers wait for their orders. We saw the potential to serve customers of this industry way better than they’ve been treated in the past.

2. We’re a small, Canadian, family-owned business.

Our small team overlooks every customer and their orders to ensure they are satisfied with their products. We answer the phone and website chat, and if we don’t, we get back to you within 6 hours or less! We even throw in some freebies at random.

3. Free Discreet Shipping Available in Canada

We offer free shipping on all orders over 149$ Canada-wide. Many companies have a weight limit for free shipping, we don’t!

4. 100% Lowest Price on the Market - Price Match Guarantee

We keep the best prices on the market at all times. If the price respects the companies’ lowest retail price, we will definitely price-match any other Canadian website.

5. Reliable International Shipping

Nearly all of our brands can be shipped internationally using FedEx, UPS, USPS, DHL or similar couriers. Go through the checkout process to receive a shipping quote or contact us if a shipping quote is not available at checkout.

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7. We are authorized resellers with manufacturer’s warranty

You will buy confidently from us since only sell new, official products (no used items or clones). All warranties are new are 100% honored through the respective manufacturer.

8. Safe, Secure and Discreet Transactions

We accept major credit cards and debit cards, PayPal, Google Pay, Apple Pay, Sezzle, bank transfers, and money orders. All card payments are processed through our encrypted SSL security processing system. Your identity is always protected.

9. Hassle-free returns

Just in case your purchase was not up to your standards, we offer return shipping if you are not 100% satisfied for any reason

10. Route Package Protection

Adding Route Package Protection to your order at checkout means that your order is protected against being lost, damaged, or stolen. In the unfortunate instance that you experience one of these inconveniences, you can report an issue with Route and they will work with you to make sure you get the resolution you prefer.

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