I came across this tank on youtube. There are actually 3 of them. I believe if you take the time to look, this will certainly be worth a discussion. go to youtube and search for, ( fish tank open bottem). Have fun!!
I think in the old discussion on this someone with video knowledge did some technical analysis which he said proved that these videos were two tracks combined in the same way you see an actor or actress carrying on a dialogue with themselves on the same screen, like Parent Trap.armenhamer said:I'm thinking that maybe their is an airhose running down from the upper tank air space to the bottem tank and then out into the air, equalizing the incoming air from the airstone. I'm going to try a few tests in the kichen sink with a jar. I understand the water staying in the upper tank but not when you pump in air because then you are replacing the water with air. I really don't believe it is a hoax.
Yes it can be done, but not quite as pictured. The description with the video says there is a vacuum pump and an air pump, not a compressor, and a water pump for filtration. Here is a pic and details of a working inverted tank, a little different, starting with the heavy glass needed.aaxxeell said:the system is based on the romaurie effect and yes it can be done, the top of the tank is sealed with a outlet port for air, the air pump is more the size of an air compressor in a closed loop, meaning the air thats sucked out the top of the tank and put back in there via the airstone so theres never a catastrphic flood.
not quite sure how to do proper waterchanges tho, +vacuming the substrate would be darn near impossible.
heres another interesting wacky tank that uses the romaurie effect slightly different:
Yeah! Reminds me of the book about aliens building the Egyptian pyramids with anti-gravity, building them upside down on the tip and then inverting the completed pyramid. If I were to be creative, I'd do it the easy way, fill my romaurie tanks by assembling them on the bottom of a swimming pool, being careful not to bump them with my SCUBA tank. Then I'd drain the pool and remodel it into a living room. :thumb:Adrnalnrsh said:How to fill the upper tank.
Tell me if this sound right.
You fill the upper tank up first with the bottom up and top down. Basically open at the top. Then you sit the bottom tank on top of the upper tank upside down so the bottom tank is facing down.
Now if you turn the tanks over quickly without slipping pressure from the air that was at the top will rise to what is now the top (since it was flipped over causing a vacum effect then you can slowly start filling the bottom tank and raising the top tank.