I am looking for a new CF
bulb for my Eclipse 5 hex tank. I got a few already from the web. I got a 4 watt and a 9 watt spiral and a 7 watt A shape. The 7 watt didn't fit, but I found another 7 watt spiral, in color temps of 5100 and 2700. The 5100K (10 watt) is what the tank came with; this light was so bright white, and the betta didn't like it. He's ok with the 4 watt, but that won't grow many plants. So I want to get the 7 watt, and I have a color choice of 5100 or 2700. The 2700 is a bit on the yellowish side, but the betta would be ok with it, I think. Does the color temp. matter to plants?