thanks, I'm looking to replace my bulbs too.Patch...sorry, I thought I saw it there.
After looking around, I have found suburbanreef.com has some 10k's for $15
Here is a link
DrsFosterSmith has some too but they are more. $22.99
Fish.com has some for $8.99 by Zoomed
Try those out....that should work better for you than my earlier posts
I understand, but I'm trying to add some 10K bulbs in to get rid of the Green Glow in the tank. I already get 6500K bulbs for $2.Yes they are 5000K. A 10000K bulb will have very little red light. Bulbs in the range of 4100K to 6000K are better suited for planted tanks.