Some time ago I'd bought three nice, small, SAEs for my plated 20
gallon, to help keep the algea I was battling at the time under control.

They didn't stay small for long. Within a year they were each five
inches long, very robust (fat, even), highly energetic, and constantly
banging into the walls of the tank. No way was 20 gallons big enough
for three of those things. What they really needed was a quarter mile
or so of running room.

My LFS let me donate them today, so I no longer have those oversize
beasties in my tank. I figure I reduced the bio load by at least 50%,
probably more.

Now the other fish should be able to relax without having to constantly
be on guard lest they get run over or smooshed against the glass.

--
Eric Schreiber
www.ericschreiber.com