950 gallon Custom Acrylic Aquarium with Black Powder Coated Steel Support Stand. The dimensions are 96″ x 48″ x 48″, L x W x H. This aquarium is used but has been polished out to brand new condition. It has one center back overflow box with (2) holes for 1 1/2″ drain and (2) holes for 1″ return. There are also (4) holes in the bottom for 1″ bulkheads. This aquarium wholesales brand new for $12,000.00. If you are looking for a super deal on a very large custom aquarium then you need to check it out. Delivery is available for an additional fee.
Texas craigslist

300 gallon salt water or fresh water aquarium with stand and canopy kit. also comes with a professional filtration system and custom lighting and heating ajustment instolled on the canopy and stand. The stand is filled up with everything you need to get this tank started. I bought it a year ago and Iv never had the time to set it up. Now my lease is up soon and Im moving from a house to an apartment so I wont be able to take it with me as much as I want to. Measurements are 7ft long x 6ft tall x 2ft wide. Serious buyers please text me 210-872-5924. Im asking $3000 obo.If you would like to just make me an offer I might just take it so let me know asap thx.
Texas craigslist

Update with Pictures. 360 Gallon Acrylic Aquarium for Sale. The Aquarium is 8ft Long, 2ft tall, and 3ft wide (front to back). It has Dual off Center overflows. Each overflow has (1) 2″ Drain and (2) 1″ Returns. The aquarium was built brand new in October 2011 and came from a company in Florida. It still looks new. Available for local pickup. I am planning on upgrading to a larger tank and need to sell this one first. Tank is currently up and running. Please e-mail for pictures. E-mail is Tgraybeal83 at yahoo dot com.

Pennyslvania craigslist

This is a custom made tank 314 gallon, 7′ L x 3’W x 2′ H 1/2″ PlexiGlass. Fits through common size doorways.
Has stone covered platform, Full table, Equipment under tank, (easy assembly sections) Liftout Platform

Features: Two access areas, can be used as Aquarium or Terrarium, Large Dry Area for Reptile Basking
Has Large Main Drain for high turn over of water
Plumbing: All ball cock valves, all plumbing assembles with unions
Hayward GM Series Sand Filter, Hayward vari Flo XL Valve, Hayward Micro Star Clear Filter (cartridge)
Hayward Power Flo Pump 1/2 HP, LifeGard Ultra Violet Light-Model QL-40
John Ernst Flow Master (digital), AquaNetics heater MH- 500 500 watts
ASKING $1800. or B.O.

ORIGINAL COST TOTAL $3000.plus We are offering this package at $1900.00 or B.O. CASH ONLY….PICK UP ONLY!!!

Sorry,…..These are the only pics available I had to scan in. Everything is completely disassembled now and ready for Sale. COME SEE!
Pennyslvania craigslist
SOLD 2/19/15 quote”The 300 gal. Aquarium/Terriarium fish & reptile tank in Towaco, NJ on Craigslist was sold by itself w/o equipment on Feb. 17, 2015″(stated by owner here)

300 gal. glass tank with wet dry filter setup under tank in stand come with
lava rocks
200 lb. of river rocks gravel
1 heater
1 waver maker in tank pump
2 air pumps
ready to go will deliver and set up for xmas additional charges will apply call edward at 951 224 0368
Oregon craigslist

I have a 500 gallon complete set up, lights, black stand , $1900

many more….

tank is 96 x 48 x 24 out of 1” thick

Please text 614 517 4909
Ohio craigslist

I HAVE A GORGEOUS CUSTOM BUILT AQUARIUM FOR SALE. IT WAS ONLY USED FOR FRESH WATER BUT IT HAS BEEN DRILLED FOR SALT WATER APPLICATIONS. IT IS SEVEN FEET LONG, THIRTY SIX INCHES WIDE AND FOURTY TWO INCHES HIGH. IT IS REALLY BEAUTIFUL. THIS TANK IS ALL GLASS AND IS IN PERFECT CONDITION. I DON’T HAVE THE ORIGINAL PAPERS BUT THE TANKS WAS CUSTOM BUILT FOR ALMOST TEN THOUSAND DOLLARS. I AM MAKING A STAND FOR IT AND IF YOU ARE INTERESTED I WILL THROW IT IN. OBVIOUSLY THIS IS PICKUP ONLY AND IS VERY HEAVY. I CAN’T DO WHAT I DREAMED TO DO WITH IT SO I HOPE YOU CAN. PLEASE DON’T LET THIS BABY GO TO WASTE. THANKS FOR LOOKING AND YOU CAN SEE IT ANY TIME.
New York craiglist

380Gal Custom Made Bowfront Acryllic Aquarium =7ft long 36″ tall -4 holes drilled in center bottom. No stand, tank only -excellent condition $1,850.
20 minutes from GW Bridge.
Call Rick at 201-456-2551.
Jersey Shore craigslist

This is a 1inch thick Tenacor show tank, dimensions of tank are 6ft wide, 4ft tall and 2ft deep. On the stand it is 6ft tall. Please note this systems weighs in excess of 5000lbs when all together, must be set up on a solid floor.
3 Tank Lights
Custom Steal tube stand

Filtration:
2 Fluval FX5 filter systems
1 Ocean Clear Filter

Rocks & Decorations

Fish include:
1 24′ Silver Arowana ($500)
1 24″ Clown Knife ($400)
1 6″ Flower Horn ($125)
4 18″ Pleco (sucker fish) ($50 each)
2 6″ Bachier (small eel like fish) ($50 each)
3 6″ Severms ($50 each)
2 4″ Ciclids ($30 each)
3 8″ Catfish (various breeds) ($30 each)
1 8″ Gobie ($75)

These are FRESHWATER fish and are fed both regular food and live food. The system is BEAUTIFUL and easy to maintain. We are moving to a smaller house and can not take this with us. We have over $20,000 in this system so please NO LOW BALLERS. Cash offers ONLY, LOCAL Pick up ONLY you will need a Uhaul and 6-8 guys to move the system. We moved it up her from AZ last year and can show you how to move it. Call or text Liz to arrange a showing7023734362

Las Vegas craigslist

Beautiful, fully equipped 300 gallon glass marine aquarium. Comes with very heavy duty cabinet with bar! Has full filtration, lighting, heater, protein skimmer, etc. Over $7000 in value new, $2000. Must move quickly. Priced to sell. Call for location (commercial establishment). 919-924-4119