Grower's Edge 6" Block Covers - 40 / pack grows Kleanse contains natural acids that

Kleanse contains natural acids that work to dissolve mineral deposits in the growing medium and on plant roots

Balanced elemental bioavailability is essential in the flowering phase to boost essential oil production

Maintain relative humidity below 70%

B1™ and B2™ combine as a two-part water-soluble formula

Removes 98%+ of all contaminants from tap water

Grower's Edge 6" Block Covers - 40 / pack grows Kleanse contains natural acids thatFor blocks of rockwool and other grow media. Grower's Edge Block Covers block light from mediawhich helps reduce algae. Use white side up to reflect light. Use toothpick to hold cover in place. Hole in center of cover measures 1 2 inch in diameter.