Grodan Slabs -The final stage of planting with growing blocks are the Grodan slabs. These slabs come in clearly marked UV resistant poly sleeves for ease of use. Recommended for larger, long term crops with extensive roots like peppers, tomatoes, or cucumbers. Typically, seedlings in blocks are placed onto slabs. Grodan Expert is the slab that drains the fastest because of its vertical fibers. By far the most popular slab for the hydroponic hobbyist market. Grodan Master is a special wet/dry slab. The top layer is thicker, which stays wetter, while the bottom layer stays drier. In effect it defies gravity, allowing more even distribution of moisture throughout the slab.

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth. Grodan comes in graduated sizes. Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired. Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums.

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth. Grodan comes in graduated sizes. Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired. Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums.

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth. Grodan comes in graduated sizes. Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired. Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums.

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth. Grodan comes in graduated sizes. Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired. Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums.

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers. The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth. Grodan comes in graduated sizes. Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired. Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums.

Grodan Slabs -The final stage of planting with growing blocks are the Grodan slabs. These slabs come in clearly marked UV resistant poly sleeves for ease of use. Recommended for larger, long term crops with extensive roots like peppers, tomatoes, or cucumbers. Typically, seedlings in blocks are placed onto slabs. Grodan Expert is the slab that drains the fastest because of its vertical fibers. By far the most popular slab for the hydroponic hobbyist market. Grodan Master is a special wet/dry slab. The top layer is thicker, which stays wetter, while the bottom layer stays drier. In effect it defies gravity, allowing more even distribution of moisture throughout the slab.

Grodan Slabs -The final stage of planting with growing blocks are the Grodan slabs. These slabs come in clearly marked UV resistant poly sleeves for ease of use. Recommended for larger, long term crops with extensive roots like peppers, tomatoes, or cucumbers. Typically, seedlings in blocks are placed onto slabs. Grodan Expert is the slab that drains the fastest because of its vertical fibers. By far the most popular slab for the hydroponic hobbyist market. Grodan Master is a special wet/dry slab. The top layer is thicker, which stays wetter, while the bottom layer stays drier. In effect it defies gravity, allowing more even distribution of moisture throughout the slab.

*Block light from media.

*Reflect light to plant leaves – where it’s needed most.

*Eliminate algae and mildew growth.

*40 dual-sided block covers per pack

*Block light from media.

*Reflect light to plant leaves – where it’s needed most.

*Eliminate algae and mildew growth.

*40 dual-sided block covers per pack

Grodan Mini Cubes -The product consists of small stonewool croutons about the size of a finger nail. When you use this potting mix the miniature cubes stack on top of each other and air pockets are created throughout the pot.

Growcubes are difficult to over-water if the container has good drainage. The Growcubes are a light weight alternative to your regular potting mix.

You can use the Growcubes in any size pot and in many different growing systems, such as ebb & flow, top watering, or just with a watering can.

Good results have been seen even ith continuous watering. The Growcubes do not need to be changed as they last for the life of your plant. If you are new to hydroponics, then this is the product you should choose. Complete with package instructions, Growcubes are easy to use and reasonably priced.

Grodan Mini Cubes -The product consists of small stonewool croutons about the size of a finger nail. When you use this potting mix the miniature cubes stack on top of each other and air pockets are created throughout the pot.

Growcubes are difficult to over-water if the container has good drainage. The Growcubes are a light weight alternative to your regular potting mix.

You can use the Growcubes in any size pot and in many different growing systems, such as ebb & flow, top watering, or just with a watering can.

Good results have been seen even with continuous watering. The Growcubes do not need to be changed as they last for the life of your plant.

If you are new to hydroponics, then this is the product you should choose. Complete with package instructions, Growcubes are easy to use and reasonably priced.

Grodan Blocks -Grodan Delta blocks are the most uniform blocks available on the market.

They feature improved grooves at the base to promote better drainage.

They are available in a large assortment of sizes and configurations to suit all types of plants.

These growing blocks are used for direct sowing or “blocking on” of Macro and Multiblock raised plants.

AO 36/40 plugs fit well into the hole sizes provided by the blocks.

The blocks can then be placed on top of a slab to provide for a larger growing volume.

Hugo is the largest of the growing blocks. It provides enough growing volume to support a larger plant, so it does not need to be placed on top of a slab.

These rockwool plant starting plugs feature a slit for easy insertion of rooted cuttings. Ideal for growers using aeroponic EZ clone machines. They fit perfectly into the holes of any standard rockwool blocks, inserted into pebbles, or any other type of growing mediums.

Granulated rockwool can be used alone or as an amendment to organic based mixes.

For example, the addition of water absorbant granulate to peat mixes at 25-50% volume, increases water holding capacity and aeration, improving plant growth and shelf life.

The water repellent granulates are superior substitutes for aerators such as perlite or Styrofoam.

The granulate is prilled for easy mixing. Granulated rockwool as potting mix – When you use granulated rockwool to pot up your plants, the great advantage is that you never have to change the mix.

The rockwool will last for the life of your plant. Rockwool’s high water holding capacity will enable you to go on vacation without worrying about your plants drying out.

Granulated rockwool can be used alone or as an amendment to organic based mixes.

For example, the addition of water absorbant granulate to peat mixes at 25-50% volume, increases water holding capacity and aeration, improving plant growth and shelf life.

The water repellent granulates are superior substitutes for aerators such as perlite or Styrofoam. The granulate is prilled for easy mixing.

Granulated rockwool as potting mix – When you use granulated rockwool to pot up your plants, the great advantage is that you never have to change the mix.

The rockwool will last for the life of your plant. Rockwool’s high water holding capacity will enable you to go on vacation without worrying about your plants drying out.

A rockwool alternative at a smart price. Uniform fiber structure ensures optimum nutrient and pH control.

Pargro blocks have air holes from top to bottom and longitudinal grooves to ensure good supply of oxygen and drainage in the root zone, meaning less risk of root rot.

Used worldwide by commercial growers for over 14 years

Pargro is the leader among affordable horticultural rockwool. Made right in the Grodan factory, you can be assured of a high quality product at a great price.

Drainage

*Driest value-priced rockwool on the market
*14% drier than competitor blocks

Value

*Value priced – no frills saves you money
*Half case sizes in plain boxes

Quality

*Cheap in price by not in strength and uniformity
*Made under quality control at Grodan factories

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers.

The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth. Grodan comes in graduated sizes.

Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired.

Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums.

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers.

The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth. Grodan comes in graduated sizes. Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired. Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums.

Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one batch of wool, Grodan is unique by making different types of fibers.

The purpose is to support the requirement of the plant in the different plant stages. Grodan has a tremendous capacity for absorbing nutrient solution while retaining plenty of oxygen for rapid plant growth. Grodan comes in graduated sizes. Seedlings started in cubes are easily transferred to blocks and then onto slabs, if desired. Seedlings or cuttings started in the Grodan cubes can also be transplanted into more traditional planters and growing mediums.