- Oct 30, 2006
any advice on weather or not a 10 gallon is big enough for a 3-4 inch carribean octopus. the tank water is from a 1 year long cycled reef tank, with good, but not perfect water quality. for filtration i have a power filter made for a 50 gallon, it is a hang on. i will be adding antic blue lighting also. the tank contains about 15 pounds of live rock. i posted a pic of the tank.