6700k or 18000k

[bumper]

Any t5 HO 24W are ~22", Bayside would have them in a 14000K or close. Pair up a blue (actinic) and daylight (14000K) lamp. You may find you have an algae issue with any 6700K. Would be great for macros though.

[abcha0s]

Mix the bulbs. One of each.

If you can only have one bulb, I'd go with the 18K.

[gobytron]

euphyllia and lps really like the blue spectrum from what I have read...

plus, an 18k bulb is much less likely to promote problematic algae growth.



If it were me, I'd do a mix of them if possible and go from there.

[jorjef]

Originally Posted by bumper

Any t5 HO 24W are ~22", Bayside would have them in a 14000K or close. Pair up a blue (actinic) and daylight (14000K) lamp. You may find you have an algae issue with any 6700K. Would be great for macros though.

I will have to give them a call, from what i've read 14000K seems to be the bulb of choice vs. the 18000K. I know the benefits of actinic but when I tried one with a 18000K the tank seems too dark.

[Lance]

If it was my tank I'd go with 2x 14000K.