Hydrofarm Black and White Poly Size:10x25 Foot 5.5mil Magnesium helps to activate many

Magnesium helps to activate many plant enzymes needed for growth

Includes an internal pump with 33 ft detachable hose

Contains sea kelp and clay minerals that make it organic based

this wrap style is a go-to for HPS grow rooms

Hydrofarm Black and White Poly Size:10x25 Foot 5.5mil Magnesium helps to activate manyGet double the grow room assistance with this waterproof alternative to metalized film. Unroll this two sided film and custom fit your indoor garden, eliminating concerns over whether you've got afternoon facing light or a climate that supports your preferred greenery. Use the white side for walls and floors, taking advantage of the material's 90 percent reflectivity. When you want to block out light and sun, use the light resistant black side. Adding