Is it worth it to combine a 2700K bulb and 6500k for chaeto?

[trmiv]

For the past few months I've been using the bulb from Melev's thread, but I was unable to find the 5100K. So instead I've had the 2700K bulb. Growth has been OK, but very slow. So today I went to HD and found a 19w sprial 6500k bulb. I bought that and mounted it over the fuge with a reflector. It's a very nice crisp white. Anyway, I figured the more light the better, so I also mounted the 2700k bulb next to it. So now I have two 19w (75w equivalent) over my fuge, but one is 6500k and one is 2700K. Does the increased light help, or is it better to just use the 6500K?

 

[kmk2307]

I think the increased wattage will be helpful. 40 watts still isn't a whole lot for Chaeto. I don't think the different color temperature will make a huge difference. There should be plenty of PAR in both bulbs.

HTH,
Kevin

 

[kmk2307]

I think the increased wattage will be helpful. 40 watts still isn't a whole lot for Chaeto. I don't think the different color temperature will make a huge difference. There should be plenty of PAR in both bulbs.

HTH,
Kevin

 

[Kelmen]

IMO:
Well, best avoid those low color temperature bulb. They may encourage something else that undesired to grow.

2700K isn't natural to them.

 

[trmiv]

Well the two fixtures are too much under my tank. They block my fan from blowing across the sump, so I can't cool the tank well.

How do you think this bad boy (5000K version) would work as a fuge bulb? Looks massive:

http://www.buylighting.com/store/cart/purchase1.asp?pid=531&XPR=057B047C0F6C0A82088C0B057B047C0F6B0A8408880B

Second choice is this:

http://www.lightbulbsdirect.com/page/001/PROD/Spiral/2894251

This looks cool too:

http://www.buylighting.com/store/cart/purchase1.asp?pid=385&XPR=057B047C0F6C0A82088C0B057B047C0F6B0A8408880B