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Ships within 48 hours · Estimated delivery Sep 1 - Sep 6
DERIVED FROM: Monopotassium Phosphate
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Hydrofarm makes it easy to "bring your own bag
Grodan Stonewool Delta Gro-Blocks & Big Mama hydro-components DERIVED FROM: Monopotassium PhosphateGro Blocks are similar to a plant container. Need a 3 in pot? Then choose a 3 in Gro Block. Small plants can be fully grown in our larger Gro Blocks. Holes are perfect size for any 1. 5 in starter plug. Come in packs labeled with instructions. Big Mama is Grodan's largest block ever produced! Big enough to grow a large plant for its entire life. More than twice the amount of wool as our Hugo Block.
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