Black White Poly, 10' x 10', 5.5 mil Water Pumps Aeration & Irrigation For calibration of pH meters

For calibration of pH meters at pH 4

Repair treats chlorosis and environmental stresses

Can be used for dry or liquid storage

including eggs

Black White Poly, 10' x 10', 5.5 mil Water Pumps Aeration & Irrigation For calibration of pH metersGet 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