Grodan Par22.5 Jumbo Block 6 in x 6 in x 4 in w/ Hole (Pallet of 704 loose blocks) Hydrofarm This formula stands as a

This formula stands as a bulwark against nutrient deficiencies

The interior is a grower's dream

we offer a full line of industrial-strength bag sizes to fit your needs

20 lb CO2 capacity: Holds enough liquid CO2 to keep a small sealed room at target ppm for roughly a month between fills

Grodan Par22.5 Jumbo Block 6 in x 6 in x 4 in w/ Hole (Pallet of 704 loose blocks) Hydrofarm This formula stands as aGrodan Pargro Jumbo Block 6x6x4 Stone Wool Growing Media Built from basalt derived stone wool, the Grodan Pargro Jumbo Block provides a consistent, inert substrate that wont lock up or release nutrients, giving growers full control over feed strength and EC. Each pre drilled hole speeds transplanting from starter plugs, while the black white foil wrap promotes quick, balanced drainage with moderate water holding capacity. Pargros rapid water