Kirk’s Hydro carries Compact Fluorescent grow lights (CFLs), LED grow lights and High Intensity Discharge (HID) grow lights from the best manufacturers, as well as the ballasts and reflectors necessary to illuminate your indoor garden.
Making Sunshine With Grow Lights
A heated greenhouse or sunny windowsill used to be your only choices for growing plants year-round. Not any more. There are a wide variety of grow lights that will allow you to grow anything from kitchen herbs to tomatoes to tropical plants indoors, no matter what the weather’s like outside.
- Your choice of bulbs will depend on the height and light requirements of the plant you want to grow.
- You will need a light fixture that fits the type bulb you choose. Grow light fixtures have built in reflectors to maximize the distributed light and are wired to safely use the right bulb.
- Some bulbs have a built-in ballast or you may need to add a ballast that converts power to be appropriate for your chosen light.
We are happy to answer questions to ensure you have a complete system to get off to a good start.
Types of Grow Lights
Compact Fluorescent Bulbs (CFL) are economical and offer the full-spectrum light plants want. Their light penetration is relatively short, though — generally giving good, efficient light about a foot deep. Kitchen herbs like chives, basil and tarragon do well under compact fluorescent lights, as do small ornamentals like African violets. Seed starting and rooting cuttings thrive under compact fluorescents.
The bulbs come in a variety of sizes from two to four feet long so you can start vegetable plants from seed in your garage in late winter or grow a small bed of lettuce for cutting healthful greens year-round.
Light Emitting Diodes (LED)
LED lights are more expensive than fluorescent lights but are economical in the long run because they draw very little power compared to other lights. The bulbs last longer than other grow lights, too. You can get LED light fixtures which are heavy on the blue spectrum (for leaf growth) or the red spectrum (for flower and vegetable growth.) Their light penetration is better than compact fluorescents, generally being effective for two to four feet from the bulb.
High Intensity Discharge Bulbs (HID)
Both high-pressure sodium bulbs (HPS) and metal halide (MH) bulbs are referred to as “high intensity discharge bulbs.” These are high-output lights for tall, sun-loving plants like tomatoes and bell peppers. They use a fair amount of power and emit quite a bit of heat. Both types of HID bulbs contain mercury which means used HID bulbs must not be disposed of in landfills. Light penetration is efficient to a depth of six to eight feet.
High Pressure Sodium Bulbs
These lights produce light in the red, orange and yellow spectrums which is just what plants want while flowering and producing vegetables.
Metal Halide Bulbs
These bulbs produce light in the white and blue spectrums which plants use for leaf growth.
Envirogro CFL 4-tube, 4-foot T5 Grow Light System
- UL listed components
- Powder coated steel housing
- 5 year warranty
- Low profile
- Hangs 3 ways – overhead, vertical, or horizontal
- Perfectly sized for propagation trays
- 10’ grounded power cord
- Includes fluorescent 6400K tubes
Customer Favorite: 1000w Reflector/Ballast/Bulb Combo
– The Raptor Reflector by Hydrofarm
– Xtrasun 1000w Convertible Ballast
for flower and fruit growth:
Hortilux Super HPS Bulb
for leafy growth:
Optilume Metal Halide Bulb
Kessil LED Lights
- very low power consumption
- very low heat production
- very long bulb life
- bulbs are spectrum specific for phase of growth: leaf or flower/fruiting