Grow Room Setup & Equipment
Panda Film
Panda film is a black-and-white plastic sheeting used in grow rooms to reflect light and block unwanted light.
What Panda Film Is in Cannabis Cultivation
In cannabis cultivation, panda film is a durable polyethylene (plastic) sheeting with a white side and a black side, designed specifically for horticultural environments. The white side reflects light back toward plants, while the black side blocks light and prevents light leaks from entering or leaving the grow space.
Why Panda Film Became Popular in Indoor Grows
Panda film became popular as indoor cultivation expanded and growers needed affordable, easy-to-install materials that could both manage light and protect grow environments. Unlike thin reflective films, panda film is thicker and more resistant to tearing, moisture, and wear, making it well suited for long-term grow room use.
How the White Side Reflects Light Evenly
The white side of panda film reflects a high percentage of PAR (photosynthetically active radiation) in a diffuse manner, meaning light is scattered evenly rather than sharply reflected. This helps reduce hot spots and promotes uniform PPFD across the canopy. While it reflects slightly less total light than Mylar, it is often preferred for its consistency and safety.
How the Black Side Blocks Light Leaks
The black side serves an equally important role by blocking external light. Preventing light leaks is critical during the flowering stage, when cannabis plants require uninterrupted dark periods. Light contamination can stress plants, reduce yields, or cause hermaphroditism.
Common Uses of Panda Film in Grow Rooms
In cannabis cultivation, panda film is commonly used to line walls, create temporary partitions, cover floors, or separate flowering rooms. Its waterproof surface also helps protect against spills and makes cleaning easier, supporting hygienic grow environments.
Proper Installation and Common Panda Film Mistakes
Common challenges include improper orientation (installing the black side inward) and loose installation. Best practices include mounting panda film tightly with the white side facing plants and sealing seams to prevent light leaks.
Related terms:
Reflective Material, Mylar, Lighting, Light Leaks, PPFD, and Indoor Cultivation.
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