Mondi Propagation Big 4 Black & White Tray Nutrients Root Builder introduces two key

Root Builder introduces two key forms of beneficial bacteria to your grow medium: Bacillus licheniformis and Bacillus subtilis

they are a threat to the healthy roots

Weight: 10 lbs

1 second on/off

and chelated iron resolve nutrient deficiencies

Mondi Propagation Big 4 Black & White Tray Nutrients Root Builder introduces two keyPremium grade virgin materials for cleanliness and durability Premium white plastic for increased light reflectivity Reinforced outside shell made from recycled materials provide strongest support to date Black base prevents light penetration to the root zone and reduces the chance of root disease Dimensions: 46 23 2. 5 in