RedRock Grow Block PRO, 6" x 6" x 5.3" (Case of 48) Commercial Lighting Calcium is known to play

Calcium is known to play a major role in the quality of many crops

The design consideration for the HI12943 is ideal for pH measurements in soils and hydroponics growing media including rockwool

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RedRock Grow Block PRO, 6" x 6" x 5.3" (Case of 48) Commercial Lighting Calcium is known to playRedRock Grow Block PRO, 6" x 6" x 5. 3" (Case of 48) Dimensions: 42 40 Hole 15x15x13. 5cm Commercial grade stone wool pro starter blocks sourced and manufactured in North America. Our Stone wool is made in the USA Wetting agent ensures nutrients are immediately plant available The high fiber density of the stone wool starter blocks makes better use of water and fertilizers while allowing dry back Our stone wool starter blocks are priced for commercial