Ideas for a big tank ?

Those are real weird dimensions IMO, but pretty cool none the less. Lots of height, where most of us prefer footprint. Either way, lots of options. Angel fish maybe?
 
How are you going to aqua-scape it? How are you going to reach the bottom of the tank?? I have short arms, so impossible for me.
 
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Lots of plants and for reaching the bottom of the tank I guess a hose
 
Personally, i'd turn it into a sandy-bottomed Malawi biotope with Peacocks/Haps. With a few large stones to break up the territories.
 
Wow that is deep. My 120G is 26" tall, and it's a good reach to the bottom. At 40", you may need to buy scuba gear and get right inside! If you are planting, it will offer some unique challenges, like getting light to the bottom. Very interested to see how this develops.
 
Post some pics, I would love to see a 40" tall tank.
 
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