What size is your tank? Tank and bulb size are closely related. I have 40g breeders and prefer to use zoo meds day night combo packs. They are easily available and usually cheap. But, through many bulbs and sizes i found that i have to use 75w daytime and 60w night time to keep my temps where i like them. Reds put off alooot of heat and a cool night lighting while the day is more clear/blue and doesnt put off as much heat as you'd think....

Note that adding bulbs will mess with your humidity levels.