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
  • 2016-08-29T09:38CST
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Hi,Do you recommend to put Styrofoam under 180 g corner flo?

Asked by: Yaniv
No, we don't recommend putting anything under any of our tanks, besides a manufactured aquarium stand.BREX
Answered by: BREX
Date published: 2016-08-26

What are the exact external dimensions of the 120gl 60x18x26 aquarium. Need outermost frame dimensions for custom stand and canopy being built.

Asked by: garyaqualog
60-1/2 x 18-1/2 x 25-5/16BREX
Answered by: BREX
Date published: 2016-08-23

how thick is the glass on my 90 gallon tank

Asked by: daddyjdizzle
If you have a standard, Marineland or Perfecto 90 gallon of 48 x 18 x 24, the glass is 10 mm thick in the front and back, and on the sides. The bottom is 6mm thick. BREX
Answered by: BREX
Date published: 2016-08-19

I have the 150 gallons Corner Flo-Aquarium (product # 4749797012) and was wondering how much weight I can put on the bottom glass.

Asked by: Mike13
The general rule is 1.5 to 2 times the gallons for how many pounds you can add. Make sure the weight is well distributed; point contact or impact could be a problem if you are referring to rock.BREX
Answered by: BREX
Date published: 2016-08-19

Is any of the 180rr tempered?  I want to reverse my tank and drill the front due to scratches and remove the corner overflows and replace with smaller overflow.

Asked by: Andrewkw
No, it is not, but any drilling voids all warranty.BREX
Answered by: BREX
Date published: 2016-08-15

Where can I buy the 75gallon to replace the one I got that is leaking, but I want a overflow on the new one? My local petsmart don't sale them, I just want to make sure it fits the stand that came with my 75 gallon marineland tank.

Asked by: pjbaca4
To find a store, simply scroll down the page to the bottom and click on Buying Options. If it is our tank, it is 48 x 18, no matter what and will fit our stands. If you just purchased a tank that is leaking, you need to either the store or us about warranty.BREX
Answered by: BREX
Date published: 2016-08-15

Do you all have a 30 by 18 reef ready aquarium available 

Asked by: Boo Boo
Not in that size, no.BREX
Answered by: BREX
Date published: 2016-08-11

Are the bulkhead sizes for all tanks 1" and do the tanks come with bulkheads? I'm looking at the ML 65 gallon with 1 corner overflow.

Asked by: JonnyA
Yes, and yes. BREX
Answered by: BREX
Date published: 2016-08-11
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