Ok Ppl! Whats Ur Dream Tank?

Instead of one gigantic tank, I'd like to have a couple of larger aquariums. One 600 gallon tank for the large puffers, one 200 gallon tank for loaches, a 200 gallon community tank for the black ghost knife, a 300 gallon mbuna tank, and a 300 gallon tall discus and angel fish tank. Oh wait, and a 300 gallon tank for freshwater sharks. Each tank will emulate the exact environment. Sigh, if only it was reality.
 
I'd have one gigantic Paludarium/Freshwater/Brackish/Saltwater tank. I'm unsure of the total size, but I'm guessing 1000 gallons or so, with the top half of the tank unfilled with water.

On the furthest side there would be a lushly planted tropical forest scene. Land forest would include a some small tree frogs, a small chameleon species, a giant millipede, and several tropical land snails.

Then comes the freshwater section of the tank. In here I'd stock with Boraras and Microrasbora species, Sparkling Gouramis, Ember Tetras, Scarlet Badis, pygmy Corydoras, freshwater shrimp galore, snails, and African Dwarf Frogs.

Next up comes a large sand bar (silica) which separates the freshwater and brackish tank portions. On it rest many species, including Land Hermits, Red Claw Crabs, Fiddler crabs, and some small Mudskippers.

Then, the brackish portion. Obviously some of the sandbar creatures will take a dip or two in here. Besides them I don't see too much, except for bumblebee gobies and some shrimp/snails. The main feature here will be the crabs, and the mangroves =)

Another sand dune (this one argonite) slopes down into the tank for the marine section. Near the "shore" there would be a sheltered margin of sea-grass and macroalgae, with some seahorses. Then, past a rocky outcrop, the real reef would begin.

All of these zones would obviously have separate water tables, with panes of glass or plastic going down to the bottom. But there would also be trickle-flows set up to go from the fresh to the brackish and the saltwater, so as the water level of both dropped, small amounts would be pumped from the fresh, leaving the fresh water the only one which has to be routinely topped off. Maybe I'd put up small sprinklers above the freshwater portion of the tank, so that it periodically "rains" to replenish (thus saving me the bother of watering the land plants).

Big issue of course is if the animals would have the sense to stay in their own salinity. Who knows if the various snails, crabs, frogs, etc will be smart enough to stay in the sections of the habitat they're designed for? Still, it's a very cool concept.
 

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