i have drift wood in there and some java moss.. its a 120 gallon.. i will take a full tank shot.. i guess it better, they have more room to swim.. they dont hang out under the structure anymore they just sit at the front glass waiting for food
thats what mine do all day chase each other around and wait for food... i have a lot of plants in mine maybe i should take them out so they have more room to swim? mines a 120 as well
as for space.. cover is good but i dont know if you need a whole tank full... i feel its good when there small and spooky but mine were only spooky for 2 days or so and they had the back ledge and the drift wood to hold too