It looks like there are a number of aquarium dealers in NJ. Just go to maps.google.com and type aquarium NJ. That is what I did and it shows a number of links:
Adventure
Aquarium
1 Riverside Drive, Camden, NJ (856) 365-3300 ·
adventureaquarium.com
22 ZAGAT ·
48 reviews
shark tunnel · jules verne gallery · gallons of water · jelly fish · giant pacific octopus
"A real treasure!" -
Jenkinson's Boardwalk
300 Boardwalk, Pt Pleasant Bch, NJ (732) 892-0600 ·
jenkinsons.com
Category:
Aquarium
4 reviews
cover bands · live bands
"The parking situation was a nightmare. We were not about to spend $20 to ..." -
Atlantic City
Aquarium
800 North New Hampshire Avenue, Atlantic City, NJ (609) 348-2880 ·
acaquarium.com
9 10 reviews
life center · dolphin watching · coast guard station · touch tanks · fishing trips
"Only $8 for an adult admission. Not very big. Only enough for about an ..." -
Shark
Aquarium
245 U.S. 22, Hillside, NJ (973) 923-3200 ·
sharkaquarium.com
7 reviews
"I LIKE THE STORE VERY HELP FULL FISH ARE VERY NICE IN HEALTH" -
That is just the first 4 I found. Hopefully this helps.