I don't think it had new roots yet...It was my first repot and I didn't really know what I was doing :(

It happens.

Are you saying I should be turning the heat pad off once a day to create this cycle?

Plants need a day/night cycle, just like everything else in this world.

It's not just the lighting, but the temperature as well with plants.

Some plants (such as Bulbophyllums) will not bloom if there is no temperature difference between day and night.

It's not natural to have even temperatures throughout the day all throughout the year. Even in the equatorial regions of the tropics, there is a little bit of variation between day and night, as well as seasons.

What kind of light is the plant getting?

It's getting quite a bit of indirect light...no direct.

The pale yellow with a slight reddish tint might also mean too much light for a phal, especially one that is recovering. In my opinion, the higher you push its metabolism, the more of a root system it needs. Maybe try moving it back away from the window a bit.