Tips for a Grow Room

Building an indoor grow room allows you to grow year-round without regard to heat and cold. You are in total control of the growing conditions for your plants and can optimize them for best production. A hydroponic system with high-intensity lighting provides ideal growing conditions for your plants and increased yields. There is more to setting up a grow room than just installing the systems.

Don't Mix Electricity and Water

Choose a room with access to both water and electricity, but keep them separate. If you are installing additional electrical outlets, move them high on the wall away from splashing water. Keep the water containers, pumps and systems away from electricity. A ruptured hose near an electric outlet could be disastrous.

Clean the Room

Clean the room and disinfect it prior to setting up your growing space. Spray the entire room for insects. Seal all cracks and joints. Make sure the floor is capable of supporting the weight of the filled hydroponic system; water is quite heavy.


Line the ceiling, walls and floor with plastic to create a waterproof seal. Staple the material up and seal it with duct tape. Even a minor spill can damage the floor and ceiling below the room. Humidity is a big problem and can cause mold to grow. Sealing the room against water protects your house from moisture problems. Install a dehumidifier to remove moisture from the air at night.


Install an air intake at floor level and an exhaust fan at ceiling height, or use an air conditioning system to provide ventilation and remove heat from the lights. Whenever possible, maintain the temperature above 60 degrees at night and below 80 degrees during the day.

Light Appropriately

Install a high intensity discharge lighting system. High-performance sodium lights are ideal for the vegetative stages of plant growth. Combine HPS lights with metal halide lamps during the flowering and fruiting stages. Alternately, use LED lighting to supply all the wavelengths necessary for your plants. High-intensity lights are expensive, but they provide high-quality light for your plants. Lower-intensity fluorescent bulbs can be used for short term use or plants that have low light needs. Use a mixture of warm-spectrum and cool-spectrum bulbs and place them in close proximity to the plants. Use reflectors to focus the light on the plants.

Keywords: grow room tips, indoor gardening tips, building grow room

About this Author

Diane Watkins has been writing since 1984, with experience in newspaper, newsletter and web content. She writes two electronic newsletters and content around the web. Watkins has a Bachelor of Science degree in chemistry from Clemson University. She has taken graduate courses in biochemistry and education.