The rule for Scales is put Both Power and Data in Metal conduit and Separate them by at least 6 inches ,
That Being said , I have seen power and data run in the same conduit befor ,
Cat 5 has a certin Twist rate ( So many twists of the wire per foot, or inch ) to help eliminate interference ,
You should be OK as Long as you are Not running a dryer or Arc welder ,
Now those Grow Lights in the Basement , well I dont know ,,,,,,,
