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Ships within 48 hours · Estimated delivery Sep 10 - Sep 15
Pressure Setting: 35 psi
Work out the residual air left in the sealed package
Is 69% Right for Storing Flower
RO membrane protection: Removes free chlorine that degrades TFC membranes over time
Grodan Gro-Block Improved Medium 4" GR7,5 w/ hole (4x4x3") (WRAPPED 6/strip 32 strips per case = 192 blocks per case) Canna Cribs Homegrown Pressure Setting: 35 psiGrodan Gro Block Improved Medium 4" GR7,5 w hole (4x4x3") (WRAPPED 6 strip 32 strips per case = 192 blocks per case) Introducing the Grodan Gro Block Improved Medium 4" GR7,5 a breakthrough in horticultural substrate design. This state of the art block is meticulously engineered, keeping the evolving needs of modern growers in mind. State of the art Density & Hydrophilic Technology: The Grodan Medium 4" GR7,5 is the embodiment of sophisticated design
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