Hydrofarm Black and White Poly Size:100x10 Foot 5.5mil Energy Factor: 2

Energy Factor: 2

Light-weight

POWERFUL ROOT STIMULANT FOR VEG PHASE

Runs at 3800 CFM and 1400 RPM

The strategic addition of just the right amounts of calcium and magnesium actually displaces sodium and excess potassium

Hydrofarm Black and White Poly Size:100x10 Foot 5.5mil Energy Factor: 2Get 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