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Growing Cannabis

Get ahead of changes in regulation. Learn how commercial dehumidification can yield pesticide-free cannabis through controlled growing. Eliminate cannabis mold, track growing temperatures and CO2 to produce more, higher quality plants.

Vapor Pressure Deficit and Indoor Growing: Part 1: What is VPD?

Vapor Pressure Deficit and Indoor Growing: Part 1: What is VPD?

May 11 2017

Written by Mike Steffes – Quest Dehumidifiers Vapor Pressure Deficit, or VPD for short, helps growers identify healthy air moisture conditions over the full range…

One Way Not to Spray: Keep Dry

One Way Not to Spray: Keep Dry

Jun 30 2016

Posted by Cannabis Product News – Solutions for a Growing Industry MADISON, Wis. – A long-time partner of the cannabis industry is looking to dry…

Basalt Mineral Wool: The Key to Perfect Irrigation in Your Grow Room

Jun 27 2016

Commercial growers use basalt (or basaltic) mineral wool in their hydroponic growrooms, and you should consider using it, too. What is mineral wool? Also known…

Fluorescent grow room lights The Different Grow Room Lights and How You Use Them: Part IV: Fluorescent and LED Lights

The Different Grow Room Lights and How You Use Them: Part IV: Fluorescent and LED Lights

Feb 11 2016

While HID lights are the heavy hitters in grow rooms when plants need the most light, both fluorescent and now LED grow room lights have…

Lighted incandescent light bulb The Different Grow Room Lights and How You Use Them – Part III: High Pressure Sodium Lights

The Different Grow Room Lights and How You Use Them – Part III: High Pressure Sodium Lights

Feb 01 2016

High Intensity Discharge (HID) lights are the most popular of the grow room lights used. There are two kinds: Metal Halide (MH) , which we…

Metal Halide Grow Room Lights The Different Grow Room Lights and How You Use Them – Part II: Metal Halide Lights

The Different Grow Room Lights and How You Use Them – Part II: Metal Halide Lights

Jan 25 2016

HID lights , or High Intensity Discharge lights , are among the most popular of the grow room lights. That’s because they are proven to…

The Different Grow Room Lights and How You Use Them- Part I: An Overview

The Different Grow Room Lights and How You Use Them- Part I: An Overview

Jan 18 2016

Let there be Light In general, a grow room needs light, light, and more light. The indirect lighting many houseplants do fine with won’t work…

Clif Tomasini and Quest unit Some state companies find opportunity in growing market for legal marijuana

Some state companies find opportunity in growing market for legal marijuana

Jan 12 2016

Clif Tomasini, project manager at Therm-Stor, stands next a Quest dehumidifier manufactured in Madison. The dehumidifiers are sold to marijuana growers in states that allow…

Condensed water vapor on grass Water Vapor in Grow Rooms: Moisture, and How to Measure It Part III: Dew Point Temperature

Water Vapor in Grow Rooms: Moisture, and How to Measure It Part III: Dew Point Temperature

Dec 10 2015

Relative humidity (%RH), grains per pound , and now, dew point temperature: All three are ways to measure moisture in the grow room. What is…

Moisture droplets on leaf Water Vapor in Grow Rooms: Moisture, and How to Measure It – Part II: Grains per Pound (GPP)

Water Vapor in Grow Rooms: Moisture, and How to Measure It – Part II: Grains per Pound (GPP)

Dec 01 2015

As we discussed last time, relative humidity (%RH) is a way to measure moisture in your grow room’s air. Today, we’ll talk about “grains per…

humidity condensing on a leaf Water Vapor in Grow Rooms: Moisture, and How to Measure It – Part I: Relative Humidity

Water Vapor in Grow Rooms: Moisture, and How to Measure It – Part I: Relative Humidity

Nov 23 2015

Plants need airborne moisture, and the water vapor (or humidity) in your grow room can determine how healthy your plants are. Healthy plants require proper…

Dude Grows Podcast with Quest

Dude Grows Podcast with Quest

Jul 28 2015

Demystifying Dehumidification: A Chat with QUEST’s Clif Tomasini- Are you using a standard residential dehumidifier in your growroom? Beware; you’re setting yourself up for failure,…

Control Humidity to Best Fight Powdery Mildew

Control Humidity to Best Fight Powdery Mildew

May 15 2015

April 23, 2015 Confusion Over Pesticide Rules Presents Conundrum for Colorado Growers “John Andrle, the owner of Denver rec shop L’Eagle Services, estimated that 95%…