Growers Edge® Block Covers 6in (40/Pack) Soil Meters Research shows that this powerful

Research shows that this powerful formula will encourage plant and root development

Fully waterproof

Used as a foliar or as a growth catalyst for all your favorite plants

Ripen® is highly concentrated and provides macronutrients that are primarily responsible for flower and fruit growth

Growers Edge® Block Covers 6in (40/Pack) Soil Meters Research shows that this powerfulGrower's Edge Block Covers block light from reaching the growing media. This helps to reduce algae and pest problems in Rockwool and other growing media. Easily set up the covers by placing the white side up and using a small object, like a toothpick, to hold the cover in place. Each package of Grower's Edge Block Covers contains 40 covers.