Gnatrol works wonders for gnats. So that's a good buy.
Bad news it turns out I erased my wiring video.... or rather it didnt transfer when I master reset my phone....
18 is far too small. You want a 12 possibly even 10 gauge. Google wire gauge to prevent voltage drop,and you should see a chart you can reference somewhere.
But if you just buy 25 foot extension cords that would work too.
I would add most of the length to the AC side. And keep the DC as short as you can manage.
@Chris Scorpio @Derbybud what would you guys suggest to give enough wire to externalize the drivers?