My tank is a 75 Gallon (48×18 x21 )
My substrate is 5 -1 play sand and EE
I have tons of hanging vines with fake flowers ,A large hollow tree stump ,A large queen conch and whelk shell, many pcs of oak bark ,2 walls of coco fiber ,A med treasure chest as a shell shop. There are two 3 gallon pools with filters 1 fresh, 1 salt water
I have a 7 gallon topper / shell shop on top with a tunnel leading to a 3 gallon moss / rock garden with a small fresh water pool in it.
The tank is insulated with a car sun shade over 3 (10x 16) UTH mats