hagen lights good for reef?

[pironya]

i was told that the power glo and marine glo lights manufactured by hagen can be used for growing coral?do they really work?has anyone tried them.i cant have mh or vho because of the heat.i already live in the tropics and the tank is already hot.
here r the specs

marine glo
- 20 W
- 24" (61 cm)
- 25 mm Diameter
- T8
- Service Life - 7500 hours
- Promotes marine reeflife
- Standard intensity
- Visible actinic blue spectrum
- Simulates deep marine light
- Stimulates marine growth


power glo

- 20 W
- 24" (61 cm)
- 25 mm Diameter
- T8
- Service Life - 9000 hours
- Promotes coral, invertebrate and plant growth
- High intensity
- Photosynthetic deep marine spectrum
- Total illumination for living corals, marine algae and freshwater plants

 

[Anonymous]

They are fine, but you need to have lots of them to do well. For example, you can use 4 marine glo and 4 power glo on a 60 gal tank and be able to keep mushroom and other low light soft corals (I did it with Xenia back in the starving student days...). With that many light, the replacement cost and totoal amount of heat will be significant, and very close to VHO and PC bulb anyway.

So I recommand you to either get a chiller or see how well evaporative cooling (fan over sump) will work for you (some parts of India is pretty dry...). Using low wattage NO bulb is not the solution unless you only want to keep low-lite corals.