Waterproof Digital Refractometer - Brix 0 to 88% HPS this fan is larger than

this fan is larger than regular fans and has a brushless EC motor fitted with carbon steel gears and dual-ball bearings

Making a doorway in a DIY custom grow tent

Next Generation in Preservation: Dry & Mighty Bags excel in preserving the aroma and freshness of your product

and nutrient uptake

Waterproof Digital Refractometer - Brix 0 to 88% HPS this fan is larger thanThis refractometer is housed in a protective, rubberized IP65 waterproof case to safeguard from wet environments, and makes for easy cleanups. Measure samples as small as 1 ml, in the field with laboratory accuracy. Sample temperature is initially displayed on the large LCD followed by the measurement results. The sophisticated microprocessor provides automatic calibration, automatic temperature compensation and automatic shutoff (after 3 minutes).