Really Large Tank

[sputnick]

Hmm I'll be different and bite on the reef. I'd do a sectioned reef. a large reef cliff at one end and a large but relatively small island reef in the middle. With lots of sandy bottom left for lobster, flounders, sharks, stingrays, and other stuff. Then I would stock it with as many flame angelfish as possible along with other angels. Then some purple firefish, and pretty much every fish in the sea lol

 

[Ruskull]

To be honest I'd rather have a tank that's those same dimensions but in feet rather than meters.  A 20 meter long tank is around 65 feet long, and 3 meters tall is around 10 feet tall!!!  That's a size I can barely even wrap my head around to ponder...........it's like the size of a fairly big HOUSE, not a fish tank.
 
Still, I'd just have the same species of fish just enormous amounts of each, like 400 Pearl Gouramis, 300 Three Spot Gouramis (of every color morph available) and maybe 3000 Glass Catfish!  That's 3700 fish yet according to aqadvisor it's only about 55% of the capacity for the tank size.  I'm not sure if everyone realizes the true size of this tank, which is roughly 98,000 gallons!!!  You would only need to change about 3% of the water per week, but that's still almost 3000 gallons!!!  Obviously you'd need an automatic water change system and all major tank cleaning would need to be done via scuba gear. 

 

 
Also Im not sure people are pushing the numbers enough here !! This thing is  97247 US gallons so 2-300 of a fish is not going to fill it out that much haha!!
 
Wills
 

 
I did mention that I expect the fish to fill the tank by breeding

It's interesting how nobody mentioned a reef so far...
 
http/www.youtube.com/watch?v=IExF0NO1e7w
 

 
 
That tank is only about a quarter the size of the one you're suggesting............

 

[haleem8777]

i think i would just buy one fish( i dont what fish) and go for a swim with it every day.
 
Really i would have probably alot of massive freshwater fish in the tank. 

 

[Zante]

To be honest I'd rather have a tank that's those same dimensions but in feet rather than meters.  A 20 meter long tank is around 65 feet long, and 3 meters tall is around 10 feet tall!!!  That's a size I can barely even wrap my head around to ponder...........it's like the size of a fairly big HOUSE, not a fish tank.
 
Still, I'd just have the same species of fish just enormous amounts of each, like 400 Pearl Gouramis, 300 Three Spot Gouramis (of every color morph available) and maybe 3000 Glass Catfish!  That's 3700 fish yet according to Advert for another forum removed it's only about 55% of the capacity for the tank size.  I'm not sure if everyone realizes the true size of this tank, which is roughly 98,000 gallons!!!  You would only need to change about 3% of the water per week, but that's still almost 3000 gallons!!!  Obviously you'd need an automatic water change system and all major tank cleaning would need to be done via scuba gear. 

Also Im not sure people are pushing the numbers enough here !! This thing is  97247 US gallons so 2-300 of a fish is not going to fill it out that much haha!!
 
Wills

 
I did mention that I expect the fish to fill the tank by breeding
It's interesting how nobody mentioned a reef so far...
 

 
 
That tank is only about a quarter the size of the one you're suggesting............

Yup, that's part of the game, because it is just a game, thinking of how to stock a stupidly big tank.

The one I've shown was the biggest reef I could rapidly find that did give a feel of something big.

 

[Vin Swords]

Mollies, guppies, snails and a placo called missy..
Decoration will be Mexican dessert background, multicoloured gravel,
for the center piece, a sunken cocoine sub.. ( with some amazon swords around it)

 

[Zante]

ONE pleco?