Hydrofarm Agrobrite FLT28 T5 Fluorescent 2-Foot is Probably the Best Grow Light for Seedlings

On Sale March 8, 2026

Hydrofarm Agrobrite FLT28 T5 Fluorescent 2 Foot 8 Tube Grow Light System

Hydrofarm Agrobrite FLT28 T5 Fluorescent 2 Foot 8 Tube Grow Light System

Category: Grow Lights

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Hydrofarm Agrobrite FLT28 T5 Fluorescent 2-Foot is likely the best grow light for seedlings. It delivers high lumen output and cool 6400K tubes suitable for young plants. This model ranks high among Grow Lights for starters and indoor seed trays.

Hydrofarm Agrobrite FLT28 T5 Fluorescent 2-Foot for seedlings

Hydrofarm Agrobrite FLT28 T5 Fluorescent 2-Foot, 8-Tube Grow Light System supplies uniform cool light tailored for seedlings. Hydrofarm FLT28 uses eight 6400K tubes to produce up to 16,000 lumens in Grow Lights setups. This fixture fits over flats and trays and works well in small grow tents or garages.

  • Light type: T5 fluorescent
  • Bulbs included: 8 6400K T5 tubes
  • Lumen output: up to 16,000 lumens
  • Housing: powder-coated steel with faceted specular aluminum reflector
  • Price: $184 (one-count pack)
  • Power cord: eight-foot grounded cord included

What light spectrum and PAR values do seedlings need?

FLT28 T5 fluorescent grow light delivers a 6400K spectrum that supports chlorophyll synthesis in seedlings. Photosynthetically Active Radiation (PAR) refers to light plants use for photosynthesis, measured in micromoles. Many seedlings need 150-300 mol m 2 s 1 at canopy level to produce compact stems and healthy leaves. The tested Hydrofarm FLT28 grow light spreads usable PAR across a two-foot tray; measure with a PAR meter.

Comparing light intensity, spectrum and coverage for seedlings

Hydrofarm Agrobrite FLT28 T5 Fluorescent 2-Foot, 8-Tube Grow Light System gives steady output and broad coverage for trays. Hydrofarm FLT28 lacks a tunable spectrum but delivers consistent 6400K daylight-balanced illumination. Hydrofarm Agrobrite grow light system excels in initial cost but differs from LEDs in electrical efficiency.

  • Up to 16,000 lumens (manufacturer figure)
  • 8 6400K T5 linear tubes for daylight spectrum
  • Price point: $184 versus many LED panels with higher upfront cost
  • Housing and reflector provide more usable light for low-cost installs
  • Missing measured specs: wattage draw and PAR/PPF figures are not provided

How to measure coverage area and ideal hanging height?

FLT28 produces even light across a two-foot-by-two-foot tray when hung correctly. Measure coverage with a PAR meter at canopy level, sampling grid points every six inches. Ideal hanging height ranges from six to twelve inches for seedlings; adjust by leaf angle and stem strength. If seedlings elongate, lower the light or increase intensity hours to reduce stretch.

Hydrofarm Agrobrite FLT28 T5 Fluorescent 2-Foot setup, placement tips

Hydrofarm Agrobrite FLT28 T5 Fluorescent 2-Foot, 8-Tube Grow Light System supports overhead, vertical, or horizontal mounting. 2-foot, 8-tube T5 fluorescent grow light ships with an eight-foot grounded cord for safe mains connection. This 2-foot T5 grow light system requires user-supplied hanging clips and chains because mounting hardware is not included.

Precise Installation Specifications and Required Accessories

  • Recommended hanging height: 6-12 inches above seedling canopy
  • Typical coverage: roughly 2 ft 2 ft per fixture for uniform seedlings
  • Power: grounded cord included; use GFCI in humid environments
  • Mounting: supports overhead, vertical, horizontal orientations; supply hooks and chains
  • Replacement tubes: use 6400K T5 linear fluorescents for matched spectrum

What maintenance and lifespan can growers expect?

Hydrofarm FLT28 needs tube replacement typically after twelve to eighteen months under continuous use. Hydrofarm Agrobrite grow light system uses powder-coated steel housing and an aluminum reflector to sustain output. Replace tubes with 6400K T5s, wipe reflector monthly, and inspect the grounded cord for wear. Expect lumen depreciation of roughly twenty to thirty percent by year two; warranty details are not provided.

Can I use this fixture outdoors in a greenhouse? Using the fixture outdoors requires caution because the housing is not listed for wet locations. Place the unit in a dry, covered greenhouse area and protect the cord with a GFCI-protected circuit. For true outdoor exposure, choose IP-rated fixtures; this FLT28 lacks specific outdoor certification information.

Can I mix LEDs and T5 fluorescents? Mixing LEDs and fluorescents works because both produce usable PAR, but spectral balance matters. Run both on separate timers and match canopy PPFD targets, since efficiency and heat profiles differ. Use a PAR meter to balance levels; adjust distances and photoperiod to prevent uneven growth.