That is absolutely crazy and awesome.....I wonder what they do for their non Divers Den fish?
Final Acclimation to Captive Conditions
Our main fish system is over 3,000 gallons and utilizes a giant fluidized sand bed filter, <u><span style="color: Red;">a 12 ft tall by 24" diameter foam fractionator (protein skimmer),</span></u> 1000 mg ozone generator, 960 watt UV sterilizer, and three dedicated pumps to facilitate the operation of the system. With additional individual fish boxes, divided cubicle sections, 24" and 48" acrylic aquariums, and 48" x 48" holding vats to supplement our main fish system, we are able to comfortably house a variety of fish - from the smallest gobies to gorgeous show-size specimens.
Oh yeah, and I would love to go see this in person...especially the 12ft Skimmer...holy s-it!