I have a 26gal community tank (12cm deep) using a single 30w tube.

I am currently using an Aquaglo tube with Co2 and plants seem to be doing
ok.

I have considered replacing the tube with a tube such as the Powerglo or
Triton, which I understand are "cooler" and may benefit plant growth.

Any suggestions or recommendation for a replacement tube to assist plant
growth and fish display?