It happens all the time!
So if you can see the bulb near the base look for a 4 digit number with a "K"
like this 5600K If the bulb came with Aqueon top it should be fine, but if you got it used, or the bulb was replaced, then could be anything.
Also there are a few options, colormax, floramax and daylight in a T8 bulb.
Ideally you would have the Floramax...
The colormax spectrum has green yellow in the color spectrum graph,
and the daylight doesn't have much red which you would want, and had more yellow and green than you would want, ideally for growing plants.
I tried looking it up and didn't see it online where I was checking on Aqueon listed as a K rating. They showed the graph color spectrum of each light bulb. Which is good to see!