Why do I get another red fader in my mixer when I add FX track?

In cubase 8 I have 3 recorded mono audio tracks. 2 guitar tracks and one vocal track. I added a reverb FX channel to use on my vocal so I got the purple fader in my mixer which controls how much of the reverb I hear. I don't understand why I also have another red fader for that vocal channel which seems to adjust the volume. What is the point of it?



thank you for your help

Why do I get another red fader in my mixer when I add FX track?