Stack - 5 Gallon spl_dlw * All Vortex PROfilters have

* All Vortex PROfilters have a Max Operating Temperature of 175°F

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

Ultra low-flow model

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

Stack - 5 Gallon spl_dlw * All Vortex PROfilters haveStack 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