C.A.P. Metalized Film, 50', 1 mil nutrient-combo The number of units required

The number of units required depends on your total system airflow (CFM) and the severity of the odor or pollution problem

and completely BPA free

even coverage over a 3' x 5' growing area

Displays time left in the cycle and whether the output is activated or not

Stronger and larger root systems

C.A.P. Metalized Film, 50', 1 mil nutrient-combo The number of units requiredThis metalized plastic sheeting will reflect about 98% of the light that hits it. You should put it on the walls around your plants to reflect wasted light back to the plants. It comes in three different roll lengths and two different thicknesses, 1 mil and 2 mil (1 mil is 1 1000th of an inch). We recommend the 2 mil for the better workability and strength. It comes in 50'' wide rolls.