Telperion

I have a related issue to lighting with an enclosure in that I feel that I need a chiller for my tank. It gets really hot where I am at and the air does not circulate as well with an enclosure on top as an open tank. What I cannot find is information on how to install a non-drop-in chiller -- all i keep reading is that with the regular ones "plumbing is necessary" -- well what type of plumbing? How difficult is it? The difference in price is huge between some drop-ins and regular chillers. Does anyone have a chiller? With a drop -in, how long is the "arm" -- I read that I need to keep the chiller away from the stand with at least 1 foot of space surrounding it - but the arm looks pretty short (with drop in). It's a pretty big expenditure so I want to make sure it will work.