Growing Cannabis

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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.

Quest 506 grow room dehumidifier hanging in a grow room facility

The Best Grow Room Dehumidifier for your Setup

Managing humidity is essential for any indoor grow operation, from hobbyist setups to commercial facilities. Whether you are battling moisture in a small tent or managing a large plant canopy, selecting the right equipment is critical. We spoke with industry experts to help you evaluate capacity, efficiency, and reliability for your specific grow space.

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plants

Vapor Pressure Deficit and Why it Matters

The gardening world is filled with trends and phrases that come and go as quickly as they’re created. Sometimes these concepts are thrown around without full understanding, especially with the more scientific processes. One of the most misunderstood concepts is vapor pressure deficit, or VPD, as it’s commonly called.

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industrial-commercial-dehumidifiers

Setting Up an Efficient Grow Room: 5 Key Considerations

Growing indoors can be expensive, with electricity bills often consuming up to 50 percent of operating costs. To maximize your profit margins and reduce long-term expenses, it is essential to focus on energy efficiency early in the building process. Our guide covers five key considerations to help you optimize your grow room setup effectively.

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Wall-mounted dehumidifier with a white exterior and green accents, featuring a filter and control panel.

Protecting Your Investment with Energy Efficient Grow Rooms

As wholesale prices fluctuate, energy efficiency has become a critical factor for successful growers. With insights from experienced builder and grower Dan Kibbin, we explore how maintaining a tight building envelope and investing in high-quality commercial equipment can reduce overhead costs, manage environmental variables, and ultimately protect your bottom line in a competitive market.

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Dehumidifier unit labeled "QUEST" mounted on a ceiling with visible cables and a white pipe.

Grow Room Climate Control: Five Steps for Better Yields

Transitioning from a hobbyist to a professional grower requires mastering climate control to maximize your yields. From managing heat generated by lighting systems to optimizing airflow and humidity levels, these five essential steps will help you maintain a stable environment and prevent crop loss as you scale your indoor growing operation to new heights.

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Lush greenery fills a plant nursery, with rows of potted plants lining a blurred pathway.

Smart Humidity Report: 20 tips from expert growers

Mastering the climate in your grow room is essential for a successful harvest. This special report features twenty expert tips gathered from top growers across the U.S. and Canada. Developed in partnership with Quest, these professional insights provide actionable strategies to help you optimize humidity levels and improve your overall crop health starting today.

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Quest Industry Gardening

Smart Humidity: A Special Report with Cannabis Business Times

Mastering climate control is essential for any successful cultivation operation. Our latest special report, created in partnership with Cannabis Business Times, provides original research, case studies, and actionable tips to help you optimize humidity levels. Access these expert-backed insights today to refine your grow room environment and improve your overall crop quality.

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Medicine Man

4 Humidity-Control Tips from Medicine Man

Tyler Schneider of Medicine Man shares expert strategies for managing humidity in cannabis cultivation. Beyond simply preventing mold and bud rot, maintaining precise moisture levels is a critical business strategy that helps growers effectively lower energy costs. Learn his top four practical tips for optimizing your facility's climate control and improving your operational bottom line.

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Dehumidifier preventing bud rot

The Herbal Cure on creating the perfect grow environment

Don Newman from The Herbal Cure reveals his professional secrets for maintaining the perfect grow environment. Featured in the Cannabis Business Times Smart Humidity Special Report, Newman shares expert advice on managing microclimates and monitoring Vapor Pressure Deficit to help you optimize your commercial cultivation operations and achieve better results in your own grow room.

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Green leaves covered with a white powdery mildew, surrounded by other foliage in a garden setting.

Powdery Mildew and Fungicides: Part 1: Background

Powdery mildew is a common fungal disease caused by the Erysiphaceae family. As an ectoparasite, this fungus grows on the surface rather than inside plant tissue. While not systemic, it spreads rapidly through spores, stunted growth, and high humidity. Learn the fundamentals of identifying, managing, and preventing this persistent plant pathogen in your garden.

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Chemical structures of THC, CBD, and CBN with "Tetrahydrocannabinol" labeled above, set against a cannabis leaf background.

Terpenoids, Trichomes & Cannabinoids Part 2: How they form

Delve into the science of cannabinoid synthesis in our second installment of this series. Discover how terpenes from plastids and phenols from vacuoles combine to create cannabinoids. We explore the internal machinery of plant cells, including the roles of chloroplasts and leucoplasts, revealing the fundamental biological pathways that drive cannabis development and chemical production.

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Close-up of a cannabis plant bud, featuring dense trichomes and vibrant orange pistils among green leaves.

Terpenoids, Trichomes & Cannabinoids Part 1: Where they are located

Ever wonder where cannabinoids actually originate on the cannabis plant? The secret lies deep within the trichomes. In this first part of our series, we explore organelle function, the role of capitate-stalked glands, and how chemical reactions within the secretory cavity shape the potency of your harvest. Discover the science behind cannabinoid production and plant anatomy today.

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Vibrant green lettuce fills a spacious, well-lit greenhouse with metal beams and large windows.

Vapor Pressure Deficit and Indoor Growing Part 3: Different Stages of VPD

Understanding VPD is essential for fine-tuning your indoor garden. In this third installment, learn how to calculate and maintain optimal vapor pressure deficit levels during both vegetative and flowering growth stages. Discover the precise temperature and humidity combinations intended to reduce plant stress, maximize resin production, and ultimately improve your final crop yields.

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Sprinkler system misting water over rows of vibrant green lettuce in a greenhouse.

Vapor Pressure Deficit and Indoor Growing Part 2: Why is VPD Important?

Understanding Vapor Pressure Deficit is essential for any indoor grower. Proper VPD balances transpiration and photosynthesis by managing how plants move water and carbon dioxide through their stomata. When the air is too dry or too moist, growth slows and plants risk nutrient burns or fungal infections. Learn how to optimize your environment today.

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Close-up of a leaf covered in glistening water droplets, showcasing its textured surface and vibrant green hues.

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

Vapor Pressure Deficit is a vital metric for indoor growers, correlating directly to plant transpiration. Unlike relative humidity, which can be misleading, VPD measures the actual pressure difference between the air and the leaf. Understanding this concept allows growers to fine-tune environmental conditions, optimize nutrient transport, and prevent crop wilting effectively.

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A man in a light blue shirt stands beside a white industrial machine labeled "QUEST" in a busy warehouse setting.

One Way Not to Spray: Keep Dry

Quest Dehumidifiers is launching an educational initiative to help cannabis growers understand the link between humidity control and plant health. By managing moisture levels more effectively, cultivators can prevent devastating molds and fungus, potentially reducing the industry demand for pesticides and ensuring a cleaner, safer final product for consumers in a growing market.

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Lush green lettuce rows thriving in a sunny garden, showcasing vibrant leaves and healthy growth.

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

Discover why professional growers rely on basalt mineral wool for superior hydroponic performance. This unique material offers exceptional water retention and root oxygenation, creating the perfect environment for healthy plants. Learn how to properly prep, handle, and utilize this versatile medium to maximize your yields and ensure stability in your indoor grow room setup.

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Fluorescent grow room lights

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

In the fourth part of our grow room lighting series, we explore the roles of fluorescent and LED systems. While HID lights remain the industry standard, understanding when to use cost-effective fluorescent tubes or emerging LED technology can help you optimize your setup for seedlings, clones, and small-scale indoor gardening projects throughout their growth cycle.

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Lighted incandescent light bulb

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

Discover how High Pressure Sodium lights complement Metal Halide bulbs to create the perfect growing environment. Learn why the HPS spectrum is essential for the flowering and fruiting stages, how these efficient lights work, and why they remain an industry standard for achieving robust plant growth and maximizing your harvest yields throughout the seasons.

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Metal Halide Grow Room Lights

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

Discover the benefits of Metal Halide lights for your indoor garden. As part of our HID lighting series, we explore how these powerful bulbs emulate summer sunlight to encourage robust vegetative growth. Learn why MH lights remain an industry standard for efficiency, intensity, and proven results in your overall grow room light setup today.

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Sunlight breaks through dark clouds, illuminating a calm lake and a distant shoreline.

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

Successful indoor growing requires lighting that effectively mimics natural sunlight cycles. In this introductory guide, we explore the essential light types used by professionals, ranging from popular High Intensity Discharge and dual spectrum lights to fluorescents and LEDs. Learn how to choose the right light to maximize your plant growth and harvest yields.

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Clif Tomasini and Quest unit

Some state companies find opportunity in growing market for legal marijuana

The rapidly expanding legal marijuana industry is creating unique opportunities for various Wisconsin companies. Businesses that sell specialized equipment and packaging are finding new revenue streams by serving growers and processors in states where cannabis is legal. As market demand climbs toward projected multi-billion dollar figures, these firms view the sector as a significant growth opportunity.

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Condensed water vapor on grass

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

In the third part of our series on grow room humidity, we explore dew point temperature. Unlike relative humidity, which fluctuates with temperature, dew point provides an absolute measure of moisture. Understanding this metric helps you predict condensation, protect your plants from moisture stress, and maintain optimal climate control in your grow room environment.

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Moisture droplets on leaf

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

Relative humidity fluctuates with temperature, but Grains per Pound (GPP) provides an absolute measure of moisture in your grow room. By understanding the actual weight of water in the air, you can precisely manage your dehumidification and irrigation needs to provide optimal conditions for your crops. Learn how GPP improves your climate control strategy.

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