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Are your Grow Light bulbs burnt out? Groindoor.com has replacement bulbs for LED Grow Lights, MH & HPS Grow lights as well as replacement bulbs for fluorescent grow lights. We strive to carry the widest selection at the lowest prices. Check out our guide on When and How to replace grow light bulbs in our learning center.

The Best Grow Light Bulb for Growing Plants?

There are several factors which you must take into account before you get yourself a grow light bulb. First and foremost, it’s the grow space. Both MH and HPS Grow lights work exceptionally well with a large amount of space but produce a great deal of heat. On the other hand, CMH and LEC bulbs are currently the most efficient HID grow lights available on the market. These bulbs are more efficient and generate less heat than MS & HPS Grow Lights. The best part is that these bulbs are also last twice as long as other HID bulbs. Last but not least, fluorescent bulbs are the best-suited option during the propagation stage, since they perform well, at lower temperatures and are less likely to burn your plants.

Best Light for Indoor Plants?

Every grower knows that plants require light from different parts of the spectrum during their different stages of growth. For instance, a blue spectrum during veg leads to leafy growth – eventually giving birth to more bud sites for the flowering state. The red spectrum ensures heavy budding during the flowering state.

Are Full Spectrum Light bulbs good for indoor growing?

YES. Providing a full spectrum of light, similar to the sun is critical for plants if you want to achieve monster harvests. Instead of using different MH & HPS bulbs to achieve this full spectrum, using a full spectrum grow light bulb is an efficient use of your resources. Full Spectrum Grow Light bulbs can provide enough lighting for all phases of your plant’s growth easily. We also carry a range of full spectrum led lights; in case you want to upgrade your grow lights. For more information, check out our complete guide on different types of Grow Light Bulbs in our Learning Center. Also, feel free to reach out to one of our expert growers at 866-GRO-INDR if you have any other questions.

 

  • Ushio HiLux Gro 315 Watt Ceramic Metal Halide Bulb, 3,000 K

    Ushio HiLux Gro 315 Watt Ceramic Metal Halide Bulb, 3,000 K

    The Ushio HiLux Ceramic MH lamps are available in 3,000° K and 4,200° K. Ceramic metal halide lamps are excellent for plant growth and HPS supplementation. Spectral distribution is optimized for photosynthetic efficiency. Blue output for healthy plant...

    $100.93 $83.56
  • Ushio 1,000 Watt Pro Plus Double-Ended HPS Bulb, 2,100 K

    Ushio 1,000 Watt Pro Plus Double-Ended HPS Bulb, 2,100 K

    Super high pressure sodium double-ended lamp for plant growth. High red and blue spectral ratios for good photosynthesis efficiency. Great lumen output for high PAR values. Robust plants through high blue light output. High red light ratio for healthy...

    $124.95 $109.73
  • Ushio 1,000 Watt Conversion (HPS to Metal Halide) Bulb,7,000 K

    Ushio 1,000 Watt Conversion (HPS to Metal Halide) Bulb,7,000 K

    400, 600 and 1000 watt SUPER high output MH with maximized output in both blue and red spectral range. Outperforms standard MH bulbs. Conversion bulb to operate on ANSI coded HPS ballast. Optimized for maximized branching and vegetative growth and added...

    $122.35 $106.69
  • Ushio 600 Watt Conversion (HPS to Metal Halide) Bulb, 7,000 K

    Ushio 600 Watt Conversion (HPS to Metal Halide) Bulb, 7,000 K

    400, 600 and 1000 watt SUPER high output MH with maximized output in both blue and red spectral range. Outperforms standard MH bulbs. Conversion bulb to operate on ANSI coded HPS ballast. Optimized for maximized branching and vegetative growth and added...

    $107.10 $102.97
  • Ushio 1,000 Super Watt Double-Ended HPS Bulb, 2,100 K

    Ushio 1,000 Super Watt Double-Ended HPS Bulb, 2,100 K

    Super high pressure sodium double-ended lamp for plant growth. High red and blue spectral ratios for good photosynthesis efficiency. Great lumen output for high PAR values. Robust plants through high blue light output. High red light ratio for healthy...

    $129.95 $106.80
  • Ushio 1,000 Watt Super HPS Bulb, 2,100 K

    Ushio 1,000 Watt Super HPS Bulb, 2,100 K

    400, 600 and 1000 watt SUPER high output HPS with maximized output in both red and blue spectral range. Runs on HPS Ballast. Optimized for maximum flower yield and added blue spectrum for vegetative growth efficiency. Outperforms standard HPS bulbs.

    $112.15 $85.05
  • Ushio 600 Watt Super HPS Bulb, 2,100 K

    Ushio 600 Watt Super HPS Bulb, 2,100 K

    400, 600 and 1000 watt SUPER high output HPS with maximized output in both red and blue spectral range. Runs on HPS Ballast. Optimized for maximum flower yield and added blue spectrum for vegetative growth efficiency. Outperforms standard HPS bulbs.

    $96.85 $73.87
  • Philips 315 Watt Master Color Ceramic Metal Halide Bulb, 4,200 K

    Philips 315 Watt Master Color Ceramic Metal Halide Bulb, 4,200 K

    These Philips lamps feature superior color quality and very crisp white light. Incredibly high 1.95 PPF (photosynthetic photon flux) per watt per second light source. 3,100° K Green Power or 4,200° K color temperature lamps available. High 92 CRI, 33,000...

    $112.42 $101.85
  • Par Pro 1,100 Watt Hyper Arc HPS Bulb

    Par Pro 1,100 Watt Hyper Arc HPS Bulb

    Par Pro Product DocumentsPar Pro 1100 Watt Hyper Arc HPS Lamp UL Test Results The Worlds Most Powerful Single-Ended Grow Lamp! Consistently Tested Over 2,380 umol! (Verified By UL) Must be used with high-frequency electronic ballasts (70-110kHz) Par...

    $106.50 $14.95
  • Gavita 600 Watt Master GP Electronic Bulb

    Gavita 600 Watt Master GP Electronic Bulb

    GavitaMaster GP T EL 600 Watt 400 Volt is a HPS Single Ended mogul bulb. This bulb has the highest micromole output in the industry! Instead of being vacuumed The Master GreenPower electronic lamp is gas filled, which allows for a smaller arc tube,...

    $109.59 $79.71
  • Gavita Replacement Kit for 1,000 Watt Reflector and Bulb Gavita Replacement Kit for 1,000 Watt Reflector and Bulb - Grow Lights

    Gavita Replacement Kit for 1,000 Watt Reflector and Bulb

    By grabbing the Gavita Replacement Kit for 1000 Watt Lamp and Reflector, you can get your lighting system back up and running for a fraction of what it would cost to buy a whole new fixture. Instead, this replacement Kit includes an HR96 Reflector along...

    $158.58 $146.95
  • Gavita Replacement Kit for 750 Watt Reflector and Bulb

    Gavita Replacement Kit for 750 Watt Reflector and Bulb

    Gavita Horticultural High Pressure Sodium (HPS) lamp with high output and extreme long light maintenance. Change once a year for best results. Light maintenance 5000 hrs: >96%. Color temperature is 2100 K and the lamp base is K12 x 30s. Suitable for...

    $118.75 $79.12
  • Gavita Pro Double Ended Bulb, 750 Watts - 2,100 K

    Gavita Pro Double Ended Bulb, 750 Watts - 2,100 K

    Gavita horticultural High Pressure Sodium (HPS) lamp with high output and extreme long light maintenance. Change once a year for best results. Initial PPF: 1950 mol s-1. Light maintenance 5000 hrs: >96%. Color temperature is 2100 K Lamp base is K12 x...

    $115.45 $55.34
  • Spectralux T5 24 Watt HO Lamp 2 ft Blue 6500K

    Spectralux T5 24 Watt HO Lamp 2 ft Blue 6500K

    These high quality T5 HO lamps are excellent for all indoor gardening applications. Use the color of your choice for the growth phase of your plants. Mix and match for a full spectrum effect. For use with T5 HO fixtures. Do not use with VHO fixtures.

    $8.63 $5.94
  • Spectralux 54W 4' HO T5, 3000K

    Spectralux 54W 4' HO T5, 3000K

    These high quality T5 HO lamps are excellent for all indoor gardening applications. Use the color of your choice for the growth phase of your plants. Mix & match for a full spectrum effect. The Spectralux 3000K Red T5 grow light is perfect for the...

    $12.94 $8.18
  • Spectralux T5 54 Watt HO Lamp 4 ft Blue 6500K

    Spectralux T5 54 Watt HO Lamp 4 ft Blue 6500K

    These high quality T5 HO lamps are excellent for all indoor gardening applications. Use the color of your choice for the growth phase of your plants. Mix and match for a full spectrum effect. For use with T5 HO fixtures. Do not use with VHO fixtures.

    $12.69 $8.01
  • Ultra Sun T5 24 Watt HO Bulb 2 ft - 6500K

    Ultra Sun T5 24 Watt HO Bulb 2 ft - 6500K

    These high quality T5 HO lamps are excellent for all indoor gardening applications. Use the color of your choice for the growth phase of your plants. Mix and match for a full spectrum effect. For use with T5 HO fixtures. Do not use with VHO fixtures.

    $9.58 $8.55
  • Ultra Sun 4 ft. HO T5, 54W, 6500K

    Ultra Sun 4 ft. HO T5, 54W, 6500K

    The Ultra Sun T5 HO 4ft. 54W Fluorescent Grow Lamp 6500K (Blue Spectrum) emits a blue/white spectrum that is appropriate for plant growth or seedlings. They have a high lumen per watt rating at 5000 lumens per bulb and you can mix and match bulbs for a...

    $14.09 $10.73
  • Philips 1000 Watt HPS AGRO Plus DE EL Lamp Philips 1000 Watt HPS AGRO Plus DE EL Lamp - Grow Lights

    Philips 1000 Watt HPS AGRO Plus DE EL Lamp

    Philips Product DocumentsPhillips AGRO Plus DE Spec Sheet The Philips 1000 Watt HPS AGRO Plus DE EL Lamp is the ultimate flowering bulb, producing deep reds and an intense output for the best combination of intensity and spectrum. But, it's also...

    $155.99 $136.95

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