Alright, so I have a glass tank, temps seems fine now as well as humidity staying in the 50-60 range, ambient temps are 80-82 on cool side and 85-87 on hot side. I'm using an UTH on thermostat with a dual dome light fixture, with 1 bulb on during day and another on at night, same wattage. My tank is in a finished basement so unless we are downstairs with lights on, there is ZERO natural light (or unnatural) in the basement during the day and night. I need the heatlamps to maintain temps. I bought a bunch of different type of bulbs to zero in on the temperature correctly and to have others in case factors change with the seasons. I have blue daylight bulbs, blue night bulbs, red night bulbs, and a red infrared spot bulb.

What's the different between a Spot bulb and Incandescent, other than the spot bulb pinpointing heat down, and the regular Incandescent bulb letting heat out in all directions. Which would be more beneficial?

Second question, since they would be in pitch black during the day AND need heat from heat bulb, should I use the blue daylight bulb during day and blue night bulb at night, or use the red infrared bulb during day and blue night bulb at night?

The Blue daylight bulb gives off light as a normal light bulb would, but it's not terribly bright as one would think.

I'll take some different pictures of bulb brightness when I get home later and post.

Spot Bulb


Incandescent Bulb