Lighting change ... maybe ...

[davmar09]

I currently have 2 10,000k and 2 Actinc 65 watt Power Compact bulbs on my 75 gallon tank. I have a few corals, nothing too light demanding (obviously).
I am considering swapping out the 10k's for 6500k bulbs. Other then the "less blue" coloring, could this cause any issues with the corals ? Or possibly cause an algae issue ? Any opinions on good or bad for or against either type ?

[murfman]

the 6,500 is very yellow. what is the reason you want to change? I have two you can borrow, if you like, before you make that jump. I started out with 2 6,500s and when it became time to change, went to 10K. I have since changed 1 to a 12.5k and will do the same with the other 10K here shortly.

No the corals wont mind, they will actually grow faster.

[davmar09]

Just looking for a change, really. It is pretty tough to get a real feel for what a tank actually looks like from a picture on a website. I have heard that the 6500's are yellow, but I was curious just "how yellow" that yellow was heh heh. I figured that the 10k's were more representative of light in deeper water, while the 6500's would be closer to a shallow water look. Plus, with 2 Actinc's, I was hoping to offset the yellowing.
I may just take you up on borrowing those two from you, Murf. It would be nice to be able to see before you buy =)

[murfman]

i get back to the springs tomorrow. go back to work sunday night so let me know when you want to pick them up. they are pretty yellow. look in my gallery and you will see what they look like back in the day when i first set up the tank. (older pix)

[davmar09]

Quick question .. but pretty important ...

Square pin or Linear ?

[murfman]

:=) Mogul, round threaded base