Mars Hydro 4 inch Inline Duct Fan and Carbon Filter Combo with Speed Controller Grow Tent the measurement ranges are -

the measurement ranges are - TDS (0 - 9990 ppm)

Adequate IR(730-740nm) is additionally consisted of in the range to generate larger buds

gathering 33% more light

sleek circular enclosure

70x70cm Plant Nets

Mars Hydro 4 inch Inline Duct Fan and Carbon Filter Combo with Speed Controller Grow Tent the measurement ranges are -Mars Hydro Inch Inline Duct Fan with Variable speed controller for easy fan speed management. Durable plastic fan housing and blades for low noise(28 dB). Powerful Motor is super energy efficient. Excellent purification inner core Made of imported Virgin Australian activated charcoal, delivering 100% filtered airflow, eliminate some of the most undesirable odors, pungent smell, and particulates from indoor grow tent or hydroponics grow room. Effective