Power Compact Bulb Question

[jcali10]

I'm thinking about buying some bulbs for a CF fixture, for a 20G Tall tank, a 1 x 65W fixture.
The color choices are:
Daylight 6700K - what I'm thinking about getting now.
Daylight 12000K - ??? over 9325K, probably not a good choice
Plant/Daylight - unknown, except for that it is half pink and half white
Since this is a 1 bulb fixture, which do you think would be the best choice? The Daylight 6700K or the Plant/Daylight?

I'm thinking about setting it up as a mineralized soil tank, with shrimp, some easy plants, and dosing excel. Kind of a low but not no maintenance tank.

[Chris]

I would go with either a 6700K, or a 50/50 6700K/10000K bulb.

[jcali10]

Thanks, I'm thinking the 6700K might be the best one right now. I'll have to think on it a while.

[Rick Dotson]

I like the 6700K but they are a little blue. I think the 10K are white-er. The 5500s are a little more red.

I believe the plants don't mind as long as the watts are high enough.

Anything below 5500 is not usable. Mercury vapor lights were popular in the early 90s because they were available in high wattage. I did not light the light and put out the extra $$s for MH.

Good Luck I don't think you can go wrong with either.

[jcali10]

I appreciate the feedback. I would prefer a 10000/6700 kelvin bulb, I think it would be more aesthetically pleasing, but the retailer could only say that it was half pink and half white. It may be a 12000/6700 kelvin bulb, since they do offer a 12000K daylight bulb. I'm hung up on 10000K, I don't think I should go over that high a rating bulb.