Grodan AO 25 X 25 X 40 mm Rockwool Cubes - Case Azomite minerals Soil mixes:

Soil mixes:

black crown rot (Alternaria species)

Fast easy to read results with large digital LCD readout

breaking up heavy clay soils and helping with retaining proper moisture levels

Grodan AO 25 X 25 X 40 mm Rockwool Cubes - Case Azomite minerals Soil mixes:Grodan AO Rockwool cubes 1" X 1" X 1. 6" (25 X 25 X 40mm) Tapered to bottom (connected at top) 10 mm diameter X 10 mm deep seed hole 200 cubes per sheet Pollutant free Pathogen free Does not lock up nutrients Does not release substances into water or nutrients Designed specifically for irrigation efficiency and uniformity Holds ideal ratio of water to air Case: 30 sheets 6,000 cubes Rockwool or stonewool is made by melting basalt rock and chalk, then