Light Proof Black Ducting Size:12'' Light Proof Black Ducting Easily mixes tanks from 50-500

Easily mixes tanks from 50-500 gallons

Humboldt Nutrients assures that our three-part fertilizer program will produce fantastic yields and premium quality crops

Reservoir: For every 1 gram of Pro Grow use 0

Manual emergency opening

- 2911 RPM

Light Proof Black Ducting Size:12'' Light Proof Black Ducting Easily mixes tanks from 50-500DL Light Proof Ducting is strong, durable, and as the description indicates light proof. That means that when properly installed no light will penetrate the ducting and disrupt your plants' lights out schedule. The ducting is also durable with multiple layers of inner liners to protect from punctures from sharp objects. DL Light Proof Ducting is available in 4", 6", 8", 10" , 12"