So, I've seen this style of low profile overflow that is a lot cheaper than the type that has a whole box attached to the back of the tank. The problem Is, I'm not finding a whole lot on how to plumb this type of overflow. Just seems like if I just drill a hole, attach a bulkhead and silicone this overflow in place, that I would get a lot of gurgling noise. Is there any special way to plumb this type of overflow?