Corner-Flo Pre-Drilled Glass Aquariums

We offer corner-flo and pre-drilled aquariums in a variety of sizes.
  • We offer corner-flo and pre-drilled aquariums in a variety of sizes.
  • 200 Gallon Corner-Flo Pre-Drilled Glass Aquarium
  • 250 Gallon Corner-Flo Pre-Drilled Glass Aquarium
  • 300 Gallon Corner-Flo Pre-Drilled Glass Aquarium
  • With one of our deep dimension Corner-Flo glass aquariums and tanks, you'll enjoy great circulation.
Product No. NV97003
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Corner-FloTM Pre-Drilled Aquariums combine Marineland aquariums with the latest advanced-design water-flow technology.  Ideal for freshwater and saltwater applications. 

  • Plumbing kit included with each aquarium 
  • Distortion-free glass  
  • Silicone sealed to prevent capillary action and leakage 
  • Lifetime limited warranty on all Corner-Flo glass aquariums 

Engineered to deliver perfect circulation and maximize water flow to the main filter system, the Corner-Flo eliminates “dead zones,” while minimizing flow noise. Water is drawn from the surface and bottom levels at an unprecedented rate of up to 700 GPH, providing the ultimate in circulation efficiency, and fishkeeping success.

A complete plumbing kit is included with each pre-drilled Corner-Flo aquarium and is designed for efficient water collection, filtration, and distribution in this easy-to-install assembly. Plumbing kit contains: All necessary bulk-head fittings, drain, return pipes, and dual Loc-Line® outlet nozzles. 

Double Corner-Flo aquariums include two plumbing kits, one for each Corner-Flo unit.  

Additional plumbing accessories may be needed for your external filtration unit. See manufacturer’s directions for further details.  

  • Matching glass canopies available
  • Many Marineland lighting options available  
  • Most rectangular aquarium sizes 75 gallons and up 
  • Cube aquariums available with Corner-Flo 
  • Curved front aquariums available with Corner-Flo 
  • Deep Dimension Aquariums available with Corner-Flo 


Stands are available for Corner-Flo Aquariums in the Majesty, Newport, Heartland, and Monterey designs.  More about these stands can be found on the links to the right.

Corner-Flo Pre-Drilled Glass Aquariums is rated 2.75 out of 5 by 4.
Rated 1 out of 5 by from Bad product poor construction Do not buy ....I have a 75 gallon reef ready tank that hasn't even been running for 2 yrs and now the seals on the inside are failing.lots of time and money is in this tank and now I have to fihire out what to do because there tank is failinh
Date published: 2016-07-10
Rated 1 out of 5 by from Do not buy !! Asking to get a cloged drain I bought the 150 gallon tank and was told it has a one in half inch drain but really it is a one inch drain !!! Right before the bulk head it has a reducer on it that goes to one inch , Therefor you are not getting enough gph if you want a nice reef tank and asking for something that can fit down the drain to get clouged when it reduces !!! - like snails or a fish that's dead or alive that makes its way over yes unlikely but why take the chance and why do they claim it has a 1 in a half inch drain when they don't
Date published: 2015-11-05
Rated 4 out of 5 by from Great tank But they stop making the corner flo on the back of the tank which is a problem for me so I may have to go with AQueno tank
Date published: 2015-07-03
Rated 5 out of 5 by from Awesome tank at an awesome price! I recently purchased the 125g dual corner overflow glass aquarium with black silicone. While I've not installed the tank yet (building a stand), I have to say that the quality of this tank is great. The price was awesome as well especially for a dual corner overflow. The packaging was very good as well. A big, big bonus are the included Durso overflows! Well done Marineland!
Date published: 2015-04-07
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Im looking for the sump system plumbing diagram on the 90 gallon rr tank. Also looking to add an emergency overflow to the system. Thank you. 

Asked by: Justin930
I will email you the plumbing instructions and tips. Any alteration of the tank will void your warranty.BREX
Answered by: BREX
Date published: 2016-07-07

I'm having issues with the site. How much is a 125 gal (6ft) with a stand to house a sump gonna cost? And how long does it take to ship to my local petsmart? 

Asked by: Thatfishdude
We do not sell direct, and Petsmart would not special order a tank. You would need to order through a local fish store.BREX
Answered by: BREX
Date published: 2016-07-06

What is the color of the silicone on the 60 Cube corner flow (97048)? Is it rimless?

Asked by: andrepeixoto
That one is rimless, and the silicone is clear. That is the only 60 gallon corner overflow that we make.BREX
Answered by: BREX
Date published: 2016-06-27

I need to know the exact weight of the 125 gallon tank

Asked by: elyf12345
237 lbs empty, approximately 1056 lbs filled.BREX
Answered by: BREX
Date published: 2016-06-16

Are the "corner-flo pre-drilled" tanks appropriate for freshwater tanks or only saltwater/reef tanks? Thanks.

Asked by: kfhonline
They are fine for either if you want to have a sump or wish to plumb a canister into them, they are not just for saltwater.BREX
Answered by: BREX
Date published: 2016-06-13

i was just wondering how much it would cost for either the black 75 gallon tank or the oak 75 gallon and also would it be possible to order one with two corner flows one on each side thanks

Asked by: Austinv
We do not sell direct. Additionally, we do not make custom tanks. The 75 gallon tanks come with one overflow only. Average retail cost for a 75 gallon with stand, canopy, etc, is approximately $600+.BREX
Answered by: BREX
Date published: 2016-06-13

I am looking at the 90 gallon RR tank. I am wondering what size pvc pipe I will be able to hook to the factory bulkheads? What size are the factory bulks? I want to run dual 1" pipes if at all possible. Thanks!

Asked by: Hatonhed
Bulkheads are 1". I will email you some plumbing tips.BREX
Answered by: BREX
Date published: 2016-06-10

 I am looking to purchase a 90 gallon marineland reef ready tank with corner overflow.  My question is, what size are the holes that are drilled in this tank?

Asked by: Hatonhed
Answered by: BREX
Date published: 2016-06-09
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