Had a friend point out I never post my setups anymore, so here's my smallest. 
Just a standard 20 gallon long with Designs By Nature 3D background, sponge filter, and a (dirty in the picture) koralia nano powerhead. Holds a breeding group of wildcaught C.121 corydoras catfish. They have been spawning every other week lately, but I'm not in a position to raise more fry right now. Yes, they are all camera shy.
Here is what they look like (from google, I take horrible pictures):
All of my tanks have 3D backgrounds now (20, 90, 125, 225), but this one was the easiest to install. Since 20 longs don't have any braces, it was a 30 second install of putting silicone in and placing on the background. Just let it dry and you're good to go.
I do plan on replacing the sponge with a smaller profile internal filter, for purely aesthetic reasons. Sponges are great (heck, I wrote the sticky on them in the setup section!), but in a little show tank you just can't hide them most of the time.
Enjoy!
Just a standard 20 gallon long with Designs By Nature 3D background, sponge filter, and a (dirty in the picture) koralia nano powerhead. Holds a breeding group of wildcaught C.121 corydoras catfish. They have been spawning every other week lately, but I'm not in a position to raise more fry right now. Yes, they are all camera shy.
Here is what they look like (from google, I take horrible pictures):
All of my tanks have 3D backgrounds now (20, 90, 125, 225), but this one was the easiest to install. Since 20 longs don't have any braces, it was a 30 second install of putting silicone in and placing on the background. Just let it dry and you're good to go.
I do plan on replacing the sponge with a smaller profile internal filter, for purely aesthetic reasons. Sponges are great (heck, I wrote the sticky on them in the setup section!), but in a little show tank you just can't hide them most of the time.
Enjoy!
