Help with new tank size


New member
I bought a 180g Planet Aquarium and stand a year ago and never set it up. I want to keep some tangs and everyone recommended a 180g or larger. The problem is that I really like my 40 breeder reef tank and want to do it on a bigger scale. I would have a tough time reaching to the bottom of a 180 and I really like viewing the tank from the surface down.

I'd like to get a 72"x24"x20" tank but that's only 150 gallons. While not ideal would I be able to keep tangs in a tank that size? I'd like to have a yellow tang, a purple tang and a yellow eye Kole tang. Maybe some day an Achillies Tang but not mandatory.


New member
Length of the tank is the key to tang happiness.
Those fish will do fine in a 150, but you may have issues with they Yellow and Purple. Both are Zebrasomas and might not get along.