My set up
Hi
I have a 4' tank with a large community of fish. Swords, Mollies, gaurami's, neons, various tetras, angels, cories, etc.
There is a internal fluval 4 and an external Ehiem. two large castles and various other rocks and bog wood. Also a couple of large shells. Dad has made his home in a turret of one of the castle directly under the outlet pipe for the ehiem so that a mass of tiny bubbles flow on to his home.
the fluval also flows over it so he likes the flow of water and bubbles I guess.
Any thing else you can think of just ask ok
Kim x