Rockwool Slab

Grodan Rockwool Slab are the perfect choice when growing in Aqua Trays.

• Rockwool – a traditional and trusted growing medium
• Several plants (3-6) can be grown in one slab
• Several slabs can be used side-by-side to cover almost any area
• Often used for “stadium” layouts
• Highly popular grow-method favoured by the Dutch
• Can be used in a re-circulating or run-to-waste system

Using Grodan Rockwool Slabs

Grodan Rockwool Slabs are usually used in Aqua Trays and can be placed side-by-side on a table or a frame. Ideally there should be slight decline in height down towards the draining pipe end. Rockwool Slabs in Aqua Trays can also be placed in a shallow “V” shape so that trays at the sides are at a higher level than those in the middle. In this way, plants in the trays at the sides are as close to your lamp as those directly underneath it, thus increasing your light-efficiency. Also Place the appropriate size rockwool slab into an Aqua Tray and place your drippers close to the points where you will be putting your plants. Connect up the drippers to your nutrient solution reservoir via a pump and timer, so plant your cuttings and you’re ready to start growing.