Join Date: Mar 2007
Location: Lake Forest, IL
Reeflex Cube HQI Ballast and Radiums
Radium 400W, 20,000 KSingle Ended Metal Halide Lamp
The German-made Radium 20000K metal halide bulb offers excellent coloration and good intensity. It is crisp-white with a strong blue tint.
It brings out the fluorescent pigments in corals nicely. Fluorescent supplementation is usually not necessary, but can be used for added intensity and to simulate dawn and dusk.
Last edited by aquacavecom; 10-26-2013 at 12:02 AM.
Reason: link edit