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The Grodan 6″ cube sometimes refered to as a Hugo Block . The cubes are a sterile hydroponic growing medium with a pre cut 1.5″ hole to hold the seedling or cutting you are repotting. Some growers will use the use the cubes till roots show out pf the bottom and then re-pot into a larger pot or system. Other growers growing small to medium sized plants will use the 6″ cube to house their plants until harvest. The Grodan cubes need to be conditioned or soaked before planting. See BELOW for?a great video on how to condition different sizes of cubes.
Rockwool can hold large quantities of water and air that aid root growth and nutrient uptake in hydroponics; the fibrous nature also provides a good mechanical structure to hold the plant stable. It is used primarily for drip hydroponic systems.
Rockwool is made by melting a combination of rock and sand and then spinning the mixture to make fibers which are formed into different shapes and sizes.
Rockwool Cubes have a pH of roughly 7.8. This is pretty alkaline, yet our plants prefer to grow in a slightly more acidic environment (between 5.5 – 6.5). In order to prepare our Rockwell cubes for the seeds, we need to soak them in some pH adjusted water, that way they have everything the seeds need to germinate and sprout; water and a slightly acidic environment.
Plug 38 x 38 x 40
Medum 7.5 x 7.5 x 6.5cm
Large 10 x 10 x 6.5cm
Extra Large 15 x 15 x 15cm
Circular peat pellets(50mm) or (30mm) are an ideal medium for seeds or cuttings. They work well with vegetables, fruit, and herbs. Earth-friendly, biodegradable pellets expand quickly. ( Price per pellet )
Rockwool seed plug 3.5×3.5×3.5cm