Grower's Edge 6" Block Covers - 40 / pack grows Benefits of CANNA RHIZOTONIC XP

Benefits of CANNA RHIZOTONIC XP

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

Now you can closely monitor and adjust the pH levels to optimize plant health and performance

Removes 98%+ of all contaminants from tap water

but you'll find them ideal for transplants

Grower's Edge 6" Block Covers - 40 / pack grows Benefits of CANNA RHIZOTONIC XPFor 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.