Power Compact Fluorescent Lighting

Power Compacts are a next generation fluorescent bulb. These systems utilize a twin-tube design. Actually they are a fluorescent tube that is bent in half. Consequently they achieve a much greater intensity with higher light outputs than your standard fluorescent lamps.

Tubes are availlable from 10 to 130 watts.

Their Kelvin ratings are from 5000k to 10000K and Actinic.

They usually last from 12 to 24 months.

This type of lighting system is alright for a reef aquarium that is not very deep. Also, they are not intense enough for SPS corals and most clams.

Although they are available in many shapes, by far the most common bulb shape used for aquarium lighting is the twin followed by the quad.

Overall, this type of lighting is a reasonably efficient lighting system.