Since you asked to see pics of BB tanks:
Here is a fast pic of my BB starboard discus tank. Custom 180 with external overflow - 18 tony tan discus (well 2 Stendker). All under a year old and when taken out of the tank and measured are 5.5" total length already. Automatic waterchanges with RO/DI water plus pothos and peace lilies growing out of sump. Recently added a 3rd kessil light so less shadows on the wood and 3 sets have now started breeding, I saw babies in the tank but they didn't last long, but was cool to see the eggs hatch at least.
It's hard to see the 2ft depth of the tank with the plants growing on the wood and rock in the pic.