Bulbs + Lamps

Elevate your indoor farm with Bulbs + Lamps engineered for CMH, HID, MH, HPS, and Fluorescent fixtures. Achieve ideal spectra, dependable PPFD, and consistent yields across veg, bloom, and propagation—optimized for greenhouses, vertical racks, and controlled environments.

28 products

Bulbs + Lamps

Controlled-Environment Growing

Power your indoor cultivation with professional-grade Bulbs + Lamps designed for CMH, HID, MH, HPS, and Fluorescent fixtures. Engineered to deliver productive spectra and reliable output, our agricultural lighting bulbs support vigorous vegetative growth, abundant flowering, and efficient energy use—ideal for greenhouses, indoor farms, and vertical systems. Each lamp is selected for lumen maintenance, PAR/PPF performance, and durability, helping growers hit target PPFD while controlling heat, cost, and quality....

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Why Choose Performance Bulbs for Your Grow?

Key Benefits

Upgrading to purpose-built grow bulbs ensures tighter spectral control, higher PAR per watt, and consistent output over a longer service life. Expect stronger root development, denser canopies, improved flower formation, and more uniform harvests—all while meeting efficiency targets and reducing change-out frequency.

Primary Uses

Use CMH and MH lamps for robust vegetative growth and structural development; deploy HPS to drive heavy flowering and fruiting; leverage Fluorescent (e.g., T5) for propagation, seedlings, and gentle canopy lighting in close quarters. Double-Ended (DE) options maximize intensity and uniformity in large rooms; Single-Ended (SE) bulbs offer flexibility for tents and small bays.

Types of Grow Bulbs Explained

CMH (Ceramic Metal Halide)

Broad, sun-like spectrum with strong blue content for compact internodes and excellent color rendering. A versatile choice for veg and full-cycle rooms prioritizing quality.

MH (Metal Halide)

Blue-leaning spectrum ideal for vegetative phases, mother plants, and maintaining tight growth structure before transition.

HPS (High-Pressure Sodium)

Red-heavy spectrum that drives flowering, bulking, and yield density. A classic, high-output option for bloom rooms and greenhouses.

HID (High-Intensity Discharge)

Umbrella term covering MH and HPS. Known for high intensity, broad coverage, and proven results in production environments.

Fluorescent (e.g., T5)

Cool-running, close-canopy lighting for starts, clones, and delicate foliage. Great for propagation racks, trays, and domes.

DE vs. SE

Double-Ended (DE) lamps deliver higher intensity, better uniformity, and improved lumen maintenance—best for large, high-ceiling rooms. Single-Ended (SE) bulbs fit common sockets and fixtures, perfect for tents and compact spaces.

Popular Brands in Bulbs + Lamps

Explore leading manufacturers trusted by professional growers. (Links open brand results on GrowersHouse.)

Frequently Asked Questions

What are the best lights for hydroponics?

There’s no single “best”—choose bulbs that match your space, crop, stage, and fixture type. CMH or MH excel in veg for strong structure; HPS dominates in bloom for weight; Fluorescent shines in propagation. Consider room size, heat load, target PPFD, and your ballast/fixture compatibility.

Can I use a regular light bulb as a grow light?

Household bulbs lack the photosynthetically useful spectrum and intensity plants require. Purpose-built grow lamps provide higher PAR output, correct spectra, and better canopy penetration.

Can too much LED light hurt plants?

Yes—excess PPFD can cause light stress, bleaching, or stalled growth. Always verify PPFD at canopy with a meter and follow manufacturer hanging heights and dimming guidance. (Even if you’re supplementing LEDs with HID/Fluoro bulbs, total PPFD matters.)

What is the difference between HPS and MH bulbs?

MH bulbs emphasize blue light for vegetative growth and compact structure; HPS bulbs emphasize red/orange for flowering and fruiting. Many growers veg under MH (or CMH) and flower under HPS.

What is a CMH bulb?

A Ceramic Metal Halide lamp with a full, balanced spectrum and high CRI. CMH promotes healthy morphology in veg and can run full-cycle for quality-focused grows.

How do I decide between CMH, HID, MH, HPS, and Fluorescent lights?

Match technology to your goal: CMH/MH for veg and structure; HPS for heavy bloom; Fluorescent for propagation and gentle close-canopy lighting. Consider fixture type (DE vs SE), wattage (e.g., 315W CMH, 600W/1000W HID), room size, heat management, and electrical capacity.

Is it better to use High-Pressure Sodium or Metal Halide grow lights?

Use MH for vegetative stages and HPS for flowering to optimize both structure and yield. If running a single technology, CMH can be a balanced full-cycle compromise focused on quality.

In which stage of growth should I use CMH, HID, MH, HPS, and Fluorescent lights?

  • Propagation: Fluorescent (T5).
  • Vegetative: MH or CMH.
  • Transition/Full-Cycle: CMH or MH→HPS.
  • Flowering: HPS (or CMH if prioritizing quality and spectrum balance).
  • Always confirm fixture and ballast compatibility before switching bulbs.