Stonewool Slab (25x25x40) 100 Cubes slab
Stonewool Slab (25x25x40) 100 Cubes slab
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Get your seedlings and cuttings off to a strong start with this slab of 100 Stonewool cubes. Balancing excellent moisture retention with plenty of oxygen around developing roots, Stonewool creates the ideal environment for healthy germination & vigorous root growth.
With 100 individual cubes, this slab is ideal for larger propagation projects, commercial growers or anyone raising plenty of seedlings and cuttings at once. Each 25 × 25 × 40mm cube is designed to fit standard 75 × 75 × 65mm Stonewool Blocks, making it easy to step plants up as they grow.
Why Growers Love It
Suitable For: Seeds, cuttings and hydroponic growing.
Strong Starts for Young Plants: Holds moisture and air to encourage healthy root systems.
Ideal for High-Volume Propagation: 100 individual cubes make it easy to raise large numbers of seedlings or cuttings.
Versatile: Use alone in hydroponic systems or with Aqua Clay (LECA), perlite, coco coir and other hydroponic substrates.
Built for the Next Stage: These cubes fit perfectly into standard 75 × 75 × 65mm Stonewool Blocks, allowing plants to continue growing with minimal root disturbance.
About Stonewool
Stonewool is made by melting basalt and limestone rock, then spinning into fine fibres & compressing into cubes, blocks or slabs. The result is a sterile growing medium that balances moisture & airflow for healthy root development.
Getting Started
Pre-Condition: Soak the cubes in pH 5.5 water before use (to dissolve lime).
Pre-Soak Time: 30 seconds to 30 minutes, until evenly moist.
Don't Squeeze: Especially when wet - this can damage the fibre structure.
Water During Light Hours: Water only when your plants are receiving light - never in the dark.
Water Wisely: Keep Stonewool moist, not waterlogged. Overwatering reduces oxygen around roots & may result in algae growth.
Handle Safely: We recommend wearing gloves & a dust mask when handling dry Stonewool, as fibres may cause temporary skin or respiratory irritation.
Explore the Range
Need a different size? See our Stonewool Block (75×75×65mm) and Stonewool Slab (40 × 40 × 40mm) – 36 Cubes so you can choose the right Stonewool product for every stage of propagation.
More cubes. More growing potential.
Additional Details
Shipping & Delivery
In Stock Quantities Online may vary due to in store sales. Online quantities are pulled from all of our branches stock levels.
- We will do our best to fulfil your order. If your order cannot be filled promptly you will be refunded via method of purchase or contacted to arrange alternate options.
We will only deliver to a New Zealand address at this point in time. We don’t deliver to PO Boxes.
Pickup orders may show available in store on the product page but may not be available in the quantities in your cart. You may have to adjust the quantities in your cart at checkout to be able to pick up at a specific store.
- Pickup Orders are confirmed once checked by staff at location of pickup. Please wait to be contacted by staff before coming to store.
Photo ID Of Person Who's Name is On The Order Must Be Presented to staff when picking up and must match name on order. We do not accept name changes of orders once placed so please make sure you are filling in the correct details.
If goods are Not Received within 7 days of purchase, contact us.
Any Damaged or Missing Items from your order must be brought to our attention within 7 days of receiving your order.
If your item is Oversized or More Than 25kg you may be contacted for an additional freight charge to be calculated upon picking of order.
We use Courier Post as our freight provider. Prices and providers are subject to change without prior notice.
To ensure successful delivery make sure there is some one Present at the Delivery Address during business hours.
Delivery times are normally 1-2 days to the North Island and 2-5 days to the South island once dispatched. Rural delivery can take an extra day longer.
In Stock Quantities Online my vary due to in store sales. We will do our best to fulfil your order promptly. If your order cannot be filled promptly you will be refunded or contacted to arrange alternate options.