When To Replace the Bulbs in Your Grow Lights

At GrowLight Heaven in Monsey, NY, you come first. Your needs are our needs, and we promise to hand you the best possible products at the best prices. But, unless you're growing with LEDs, you might wonder when and how often you should change your grow light bulbs. You may be aware that changing grow light bulbs every year or so is the norm, but there are a lot of variables to consider. GrowLight Heaven in Monsey, NY, is here to talk about the four most important signs to consider when needing to replace your bulbs.

Bulb Types

There are multiple options for light bulbs when it comes to using a great grow light. HPS (high-pressure sodium) bulbs, for example, last an average of 18 months before they need to be replaced. On the other hand, MH (metal halide) bulbs last an average of 12 months. If you're not sure which type of bulb you're using, contact us today, and we'll get you the exact information you need. 

Intensity and Color 

The next thing to consider is how bright your grow light is and what color it emits. The brighter the light, the sooner it will need to be replaced - typically every six to twelve months. As for color, HPS bulbs emit a yellow-orange light, while MH bulbs emit a blue-white light. Depending on your plant's needs, you may want to switch between these two types of bulbs as they approach the end of their lifespan.

Usage and Plant Size 

The time your light is on also determines how often it will need to be replaced. For example, if you're running your grow light for 12 hours a day, it will last twice as long as if you're running it for 24 hours a day. Additionally, the size of your plant will also affect how often you need to replace your grow light. Smaller plants need less intense light so they won't put as much strain on the bulb.


Finally, the environment in which your grow room is located can also impact how often you need to replace your bulbs. For example, if it's a dusty environment, the bulbs will need to be replaced more often. On the other hand, the bulbs will last longer if it's a humid environment.

Consider these four factors when determining how often you should replace your grow light bulbs. And if you have any questions or need help finding the right products for your grow room, contact GrowLight Heaven today. We're always happy to help!