jameshughes1989
Fish Addict
39W t5s are about 85cm, doh. The 24W t5s are 55cm. So, the 24W might be better. To power the 24W t5 bulb, have a look for a "24W HAGEN GLO T5 HO light starter". If you want to use 2x24w then you can get a dual light starter.
Which grobeam? The tile or the 500 light strip? The tiles are apparently the equivilent of a metal halide. The lighting strips are like a t5 bulb. I don't know the details though, can anyone else chip in?
Also, wouldnt the 48 watts be too much light or would I get away with it with no co2? The tank is about 45 US gallons.