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Simply increase the base to increase your calcium levels
rock dust and kelp for exceptional quality castings
Expanded 4-digit dual-line display shows pH and temperature readings simultaneously
it can be used anywhere and anytime to help you manage your crops' daily nutrient requirements
and imported cabbageworm
Grodan Stonewool Delta Gro-Blocks & Big Mama -monitors-&-timers Simply increase the base toGro 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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