Grodan ParGro Jumbo 6 inch x 6 inch x 4 inch w/ Hole Hydrodynamics International - Clonex Non-toxic - Safe to use

Non-toxic - Safe to use on plants in any stage of growth

With a 60% Water Holding Capacity (WHC)

This large-grind mix is 100% soluble and will not clog irrigation systems or leave sediment in reservoirs

The fan pulls hot

Harmonious with Nutrient Regimens

Grodan ParGro Jumbo 6 inch x 6 inch x 4 inch w/ Hole Hydrodynamics International - Clonex Non-toxic - Safe to useGrodan ParGro Jumbo 6 inch x 6 inch x 4 inch w Hole The Grodan ParGro Jumbo 6 inch x 6 inch x 4 inch w Hole is a game changer for hydroponic growers seeking superior moisture control and optimal root development. With its outstanding features, these rockwool blocks provide the perfect growing medium for your plants, ensuring healthy and vigorous growth. The Pargro line by Grodan has been specially modified to offer the driest value priced rockwool on