This is a 40 gallon wide tank.
In far left I got a 100W day light bulb for the plants inside
Near right is a 75W red bulb
Left side of the tank is generally well lit while the right side, especially far right corner is pretty dark, shaded by the cactus and a piece of wood.
Cocofibre is the substrate with some peat moss on top and mixed in. Marble rock and beach pebbles are all around.
The Cave is a cut out of a plastic cup for the top and a marble rock as the entrance.
Inhabitant these days is a male emperor, but maybe more to come soon.
Comments, thoughts and ideas are more than welcome