Hell if I know, I got the tank and stand for 100 bux from a classified ad. I just enjoy the hobby.
Go big or go home. Bigger tanks are easier to care for, so don't wuss out and just get a 10 gallon. You will have to do more frequent water changes and substrate cleaning.
Tetra: 4 Lampeye, 5 Neon
Danio: Glofish (4 Blue and 3 Orange)
Rasboras: 4 Harlequin
2 African Dwarf Frogs
The exotic Plasticus Fakecilimous.
Pain is temporary, pride is forever
I had a octagon tank many years ago and it was awesome, then I lived in Europe for 4 years, then I didn't. So I got another tank, this time a bigger one.
The pet trade gets a bad rap for exploiting wild animals but sometimes the opposite is true.
Modern advances in technology affect every industry - even the aquarium hobby.
If you are looking for a unique invertebrate to add to your saltwater tank, consider the sea urchin.