Growcube - Rockwool Mini Cubes

Grodan Growcubes are an ideal hydroponics stonewool substrate for growing many crops. Ideally suited for top irrigation (watering can or drip system), the product also performs well under ebb & flood applications. Use these mini cubes to fill container of your choice. It is recommended that rockwool be conditioned by soaking for eight hours in a pH 5.0-5.5 and then rinsing with pH 7.0 water. Roots love these little baby grodans!