Boyu 450 Tank Random Wire?

adams

Member
Hello,
I've had my tank awhile now but have always wondered about a random wire which seems to come from the section before the skimmer. It is attached to the part that gives the skimmer the air supply but leads to nowhere.. The end of the wire looks like somewhere you could plug in some headphones (but clearly not headphones)
any idea what the wire could be?
thanks,
 
Top