The stars of the show native Long Islanders and brothers-in-law Wayde King and Brett Raymer installed the aquarium at the hospital during three days last month.

Their Las Vegas-based Acrylic Tank Manufacturing has designed and built more than 10,000 aquariums during the past 16 years.

Through four seasons of the series, which they pitched to the cable network, King and Raymer have become known for one-of-a-kind custom creations that can carry six-figure price tags.

The cost of a 75,000-gallon tank for a Dallas megachurch: $4 million.