There is one that looks very professional. I'll see if I can dig it up, but I can't remember who built it. I'm having a football related brain fart. LOL
the sump(purple rubbermaid) is for the hundred (top left)..
1.5" and .75" overflows drilled into the back.. rio 14hf (660gph at 4').. it sits at about 2'..
the sump is full of scrubbies, random sponge blocks, sheets of filter floss and prettymuch whatever else ive had kicking around.. tanks constantly tests at 0,0,20 which is better than my tap water so as far as im concerned it works great..
Heres my set up.... This is more of a room divider, but can be used for the same thing.
I have a tank below as well. the over flows go into the wet/dry which holds 7.5gals of bio balls, which then drains to the tank below. a pump then returns the water back to the top tank. An FX5 filters the top tank and is filled with sponges and biomax, and a fluval 405 does the bottom tank and is filled with the same.... both tanks have 300watt heaters.
If i didnt have the bottom tank, i would just do a basic covering for the stand, and have everything else in the side compartment.. i would add a sump for the wet/dry however... it works very well.
Our wet/dry filter is on the floor behind our 300 gallon tank. There's an FX5 and a 40 Watt UV sterilizer back there also. Our mechanical filtration is in the former furnace room on the other side of the back wall.