A highly efficient source of long wave ultraviolet radiation. The spectral energy distribution emitted by this bulb, 420 nm (same as actinic 03), closely aligns with that of the blue chlorophyll adsorption peak utilized in photosynthesis, so it's very desirable for use with invertebrates and plants. 180° internal reflector. 100% blue spetrum. Endcaps not included with bulbs.
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