Who says you have to? They will not die, unless you don't do water changes, feed them, or take care of them.....
again, I have a 25G (closest to you in size)....in it I have a yellow Tang, a Potters Angel, and a 6" long goby....
30 pounds of rock or more..and corals...no skimmer...
you will be fine
again, I have a 25G (closest to you in size)....in it I have a yellow Tang, a Potters Angel, and a 6" long goby....
30 pounds of rock or more..and corals...no skimmer...
you will be fine