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 3.2 out of 5 by 5.
Rated 5 out of 5 by from Great customer service I bought a 150 gallon with overflows. The store new everything about the tank so that was helpful. I had a small problem with the tank and wrote a review about it. Marine land contacted me and offered to,,, then did take care of my problem. I've since moved to a smaller home but have 3 marine land tanks. Two 75 gallons and a 30 I made into a dump. I will only buy marine land tanks. Except the horse trough that's part of my sump but even then for a few extra dollars I could've bought another 75 gallon that would take less space in my closet.
Date published: 2016-09-17
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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I am looking at purchasing a 120 gallon reef ready tank. I am interested in the 60" wide tank. Could you send me info on the configuration of the overflow, dimentions and location of the plumbing. Are there one or two overflows in this tank?

Asked by: Lynn052
Thank you for contacting us. I will email you with those configurations directly. It has two overflows.BREX
Answered by: BREX
Date published: 2016-11-28

I have a older 150 with two corner flow that I am hooking up can you send me the plumbing diagram. 

Asked by: Chad44
Sure can!BREX
Answered by: BREX
Date published: 2016-11-28

I currently have a RR 93 cube tank and it has the annoying return pipe shooting loads of water against the interior of the overflow instead of back to the tank. Have you guys fixed this problem on the 120xh? I read long ago that you were looking at a fix.

Asked by: Jesse77
Hi Jesse77! I think you are confusing the issue where some people encounter flushing with your particular issue. The overflow pipe has a piece that extends over the overflow panel and into the tank. It should definitely be returning the water into the tank itself, and not hitting the panel. Sounds like you have something installed incorrectly or are missing a part. The flushing issue is where water moves up and down in the overflow area, creating a lot of noise. This occurs due to either a pump that is too small for the job or a restriction in the line like a ball valve closed too much, tubing/PVC too small, etc.BREX
Answered by: BREX
Date published: 2016-11-23

I have a 120xh dual corner flow tank. I'm ordering a 3D background. Could anyone provide me an interior schematic with dimensions (including length and radius of overflows). I'm a quadriplegic, unable to do this myself. I sincerely appreciate any help!

Asked by: Delusional470
I will email you what we are allowed to send out, but I am not sure it will give you everything you want. It will be sent directly via email.BREX
Answered by: BREX
Date published: 2016-11-15

I bought a tank with dual corner flows and i took them apart for cleaning while moving and my wife has managed to lose that and the plumbing.... is there anyway to get these replaced?

Asked by: Jim33609
Thank you for your inquiry. The overflow kits are not available separately. I will email you directly to see what, exactly, you need to replace.BREX
Answered by: BREX
Date published: 2016-11-14

Hello,I inquired about a tank for my red eared slider turtle and Brex responded. I tried to respond back with no success.I still have many questions..Cost of the tanks and what type of plumbing is needed and filter system etc..Thanks

Asked by: Freddy61
Thank you for your response; I'm happy to help, and will email you directly. However, we do not sell tanks directly, you will need to purchase one through a retailer. These tanks are more commonly used for marine aquaria but you can certainly use it for a turtle, except you will need a sump filter, and the water level will need to be close to the top of the tank, which may not work for allowing a basking area. The overflow requires 1" tubing and a utility pump in the sump that can move 700-750 GPH at a 4-5 foot head.BREX
Answered by: BREX
Date published: 2016-11-09

Hello,How wide are these tanks..We own a 6lb red eared slider turtle..

Asked by: Freddy61
Thank you for your question! Corner flo tanks are 18", 24" or 36" wide, depending on the size tank you are interested in. Typically, for adult sliders you want either a 75 (18" wide), a 125 (18" wide) or a long 150 gallon (18" wide). These tanks work well with turtles because they are long, wide, and short in height, making it easy to maintain them, yet allowing at least a 12" depth of water or more for swimming. The 75 is ideal for male sliders, while the 125 or 150 is better for female sliders.BREX
Answered by: BREX
Date published: 2016-11-08

Do you make them with the single overflow on the right? And can the top of the overflow go halfway up the height of the tank? This setup is for a turtle.

Asked by: UtahSkip
No, we do not make any custom tanks, unfortunately. They are only made with the overflow as shown.BREX
Answered by: BREX
Date published: 2016-11-02
  • 2016-12-07T10:13CST
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