Stack - 5 Gallon spl_dlw Grodan Blocks - Grodan Delta

Grodan Blocks - Grodan Delta blocks are the most uniform blocks available on the market

We start with carefully designed and tested recipes and the very best ingredients

the shelves are made of aluminum alloy plate with good thermal conductivity

For vegetative growth

Unidirectional pressure equalization valve

Stack - 5 Gallon spl_dlw Grodan Blocks - Grodan DeltaStack is a natural plant nutrient made from kelp extract. The nutrients in Stack encourage healthy growth and flowering. Stack gives the plant tools to reach its full genetic potential. When used as a foliar or root drench, Stack helps correct minor potassium deficiencies. Instructions for use: May be used as a foliar spray or root drench, one application weekly. Safe for use in irrigation systems. Stack contains organic ingredients and may separate