'North Atlantic' Cold Water Marine Setup...... What are the pitfalls?

I don't know too much about saltwater tanks myself, other than what I have read in a few books, and learned from one of the managers at the store I work at. But, if you have the money to shell out for a good cooler, I don't see where the issue would be. I was actually looking into setting up my 125 for two rainbow trout a while back, but heard how expensive coolers could be so I nixed that thought.

Small Tank Large chiller

Cold water is redic easyI have a 14 bio with a colwater setup, everything came out of a box of fresh oysters and my buddys son's collecting adventures along the beachIt evaporates much slower and seems to be doing fine at 50F, I am running a 1/13hp chiller though.1 Major pitfall I had 1 tank crash ever with this tank when the power went out my chiller was under the tank cab, the heat from the chiller sent the tank up to the mid 80s killed all livestock except for snails, a month later i reset the tank and it's running fine again

To put this in perspective a lobster tank is at circa 47F and uses a 1hp chiller, I use a 1hp chiller on a 1000gal SW tank.

There is a thread around somewhere of a guy who maintains a BEAUTIFUL cold water setup. I just can't remember the title, something like "take a look at this cold water setup" or something.

Found it http://www.aquariacentral.com/forums/showthread.php?150891-Check-out-this-cold-marine-reef-tank

New zealand tank