Chiller?...No way, at 2,000 feet deep, temperature is NO PROBLEM!, though I do choose to think air traffic controllers should know about this tank!
As a pilot (who fly's at 3,000 feet or less), I would want to know about it!, if for no other reason, than just so I could fly around it! I just hate it when a functional "Reef" tank get's in the way of my flight path home. Come on just think about the salt cost of a refill.
JMTCW