Ok, I did some research on the bulbs I have. One Aqua Glo and one Life-Glo by Hagen. Both T-12, 20w. I have a 30 gal tank. One is 5 years old, the other 3. Don't know which is which. From what you said in your previous email these bulbs provide barely enough light, and the T-5s will provide less for my low light plants. Now that it is spring, I will have increasing natural light, not to mention sun, until the Fall Equinox. I thought about wraping the plastic "reflector" with foil to increase the light I already have. The T-5 is supposed to be a high-performance bulb. Where do you find out about lumns on a particular bulb? I went to the website on the box and the bulb I'm researching is not even listed, much less any specifications. I also went to a couple of other web sites I know about with no luck. Thanks for all your help and patience. Paula On Saturday 13 March 2004 05:27 pm, you wrote: > I'm a little mixed up :-\. You said 13 watt T5s -- I > don't know why I was thinking 15 watt. Those 13 T5s yield > less than the T12 20 watt bulbs -- closer to 800 or so > lumens. > > Scott H. > > --- Paula Hofmann <paula.hofmann@gte.net> wrote: > > Two 20w bulbs are in the hood now, but the T-5 comes with > > its own fixture so that shouldn't be a problem. I thought I'd put a daylight and a blue (2 T-5s) in place of the 20w bulbs. I have low light plants so I don't want to overwhelm them with too much light. > > ===== > -- Peace and love, Paula ------------------ To unsubscribe from this list, please send mail to majordomo@thekrib.com with "Unsubscribe aga-member" in the body of the message. Archives of this list can be found at http://lists.thekrib.com/aga-member/