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Crysta-lux Light Bulb By Penn Plax
Reader's Reviews (8)
Favored aquarium lighting
posted 6 years ago
I always liked this plain low-wattage incandescent bulb to enhance my aquariums. It lasts a surprisingly long time. I rarely needed to use a tank heater, thanks to the bulb's heat -- but do check your tank's thermometer regularly.
Pros: Inexpensive source of light and heat
Cons: Keep water level safely below bulb
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