I don't use that particular product but I CAN tell you that, if you have
fish, they will not show particularly well at 5000k. I once tried lighting
my whole tank at 5300k and it looked really unnatural. Some posters will
tell you that spectrum doesn't matter but, the way I learned it, aquatic
plants will do best between about 5300k and 6800k (give-or-take a "k",).

I've got two 55 watt cf at 5300k in the rear strip and two 55 watt cf at
6700k in the front strip in my 75 gallon and it still looks pretty
yellowed-out, although the plants show well.

Anyway, my two-cents U.S.

kush

DDD wrote in message
.com...
Hi I was wondering if anyone uses the AB 70 watt HQI bulbs at 5000K.

If so what kind of comments or results do you get?

Drew