cube vs rectangle? upgrade time

[Finn450]

Primary driver will be my tangs...Naso, Yellow, Blue Hippo and Bristletooth. They have all been together for 2 years...no aggression at all in a standard 4ft tank. Was planning to upgrade to a 6x2ft tank...but like the idea of a big cube...4x4ft. Some have said length is more important...others have said open space and multiple swim lanes is better. Will also be keeping SPS. thoughts appreciated.

 

[exnisstech]

I upgraded from a 72x24x24" 180g to a 84x30x25" 330 because I felt my tangs were getting cramped. I had a naso and hippo in the smaller 6ft tank and I would not recommend them in a 4ft tank. Those two fish get very large and use very bit of my 7ft tank. Yellow and bristle tooth would be fine IMO. I have a wild yellow and two spot bristletooth tooth that have been together for over 2 years in a 3ft tank and never see aggression or nervous behavior.
An 4ft cube with br an awesome SPS tank but not a good tank for large tangs IMO.
My rock work is laid out so fish can swim in front, behind, through and above the rock and they use every bit of the space. TBO I wish i could have gone larger but i don't have the space.

Video showing my gang and the tank layout.



PS. I know 2 years sound like a long time to have the fish together but my hippo was still growing at 5 years and my naso growth has finally slowed down after 9 years. I have 3 biota yellows 2+ years and they aren't even close to adult size yet. The hippo in the video is only 2 yo. I lost my older one.

 

[Finn450]

I upgraded from a 72x24x24" 180g to a 84x30x25" 330 because I felt my tangs were getting cramped. I had a naso and hippo in the smaller 6ft tank and I would not recommend them in a 4ft tank. Those two fish get very large and use very bit of my 7ft tank. Yellow and bristle tooth would be fine IMO. I have a wild yellow and two spot bristletooth tooth that have been together for over 2 years in a 3ft tank and never see aggression or nervous behavior.
An 4ft cube with br an awesome SPS tank but not a good tank for large tangs IMO.
My rock work is laid out so fish can swim in front, behind, through and above the rock and they use every bit of the space. TBO I wish i could have gone larger but i don't have the space.

Video showing my gang and the tank layout.



PS. I know 2 years sound like a long time to have the fish together but my hippo was still growing at 5 years and my naso growth has finally slowed down after 9 years. I have 3 biota yellows 2+ years and they aren't even close to adult size yet. The hippo in the video is only 2 yo. I lost my older one.

Awesome system...thanks for the info.