Large Aquariums 180g - 399g

A forum for people interested in keeping large aquariums. This forum is dedicated to water volumes of 180 gallons to 399 gallons. Anything more is a monster tank!

Large Build Our New 190-Gallon Build

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Replies: 58

Views: 3,242

Large Build New 240 Gallon (4X4X2) Custom Build

Replies: 10

Views: 978

Large Build kennysreef - Innovative Marine 200 INT Build

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Replies: 47

Views: 3,149

Large Build Smiddy's Reef 360 Peninsula

Replies: 572

Views: 52,890

Large Build Not a nano tank anymore! Digital Reef 300g?

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Replies: 49

Views: 1,937

Red Sea Reefer 3XL 900 G2+ Noob Build

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Replies: 33

Views: 975

Large Build GAM_GAM’s Red Sea Reefer 750

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Replies: 44

Views: 1,918

Large Build CADE 2100 - New Build Thread - Reef Stock Denver 2022

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Replies: 54

Views: 3,405

My basement peninsula (~240G ish), starting from studs.

Replies: 10

Views: 582

My new tank, Reef Savvy 180 and Benner stand

Replies: 8

Views: 365

Large Build The upgrade downgrade - Red Sea reefer s-850

Replies: 14

Views: 1,578

Large Build Skinz's big boy tank.

Replies: 850

Views: 63,930

Large Build My Custom Tsunami 190g Corner Tank

Replies: 16

Views: 863

Large Build Waterbox 220.6 Upgrade

Replies: 18

Views: 1,170

Large Build Big Bertha: 180g Build

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Replies: 58

Views: 3,660

Large Build 180 upgrade mixed reef

Replies: 13

Views: 467

marcus aurelius

First large build - making sure im not missing anything!

Replies: 13

Views: 325

Emergency! Waterbox 230

Replies: 10

Views: 295

Large Build Sushi Bar 210 Build

Replies: 17

Views: 1,005

Large Build Oceanic 175g Bowfront + 25g Frag Tank

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Replies: 114

Views: 4,288

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