Connecting tanks?? anyone seen this or done it?

  • We are currently upgrading MFK. thanks! -neo
Ok, i understand the physics of the one i posted, and the koi pearl.... but the open bottom tank which i have seen before still baffles me due to the fact that every open bottom tank i have seen has an air bubbler in the upright part, which baffles me because in theory that would be working against the vacuum that is holding the water from ending up on your floor....can anyone explain this to me?
Maybe im just a lil dense on this one lol.
 
tjfish said:
Ok, i understand the physics of the one i posted, and the koi pearl.... but the open bottom tank which i have seen before still baffles me due to the fact that every open bottom tank i have seen has an air bubbler in the upright part, which baffles me because in theory that would be working against the vacuum that is holding the water from ending up on your floor....can anyone explain this to me?
Maybe im just a lil dense on this one lol.
Click to expand...

If they're putting air in, they're taking it out, so either the air is being pumped down from the top of the upper tank in a closed loop, or the air is being pumped in from outside and then removed by another pump.
 
seems kinda pointless when you could simply make the top sealed and let the vac hold it lol
 
As long as the air is sealed on top from escaping the seal is not broken. If you do a search there are other videos showing how to its done. If I can remember they have a bleed off valve on top that they can open once in awhile to let the air out. As the air escapes the water rises.

This one pretty cool but seems really trusting that no stupid kid throws a rock or does come kind of vandalism and breaks it so exposed to the street.

http://www.youtube.com/watch?v=8g7nlQXkZy4&feature=related

[url]http://www.youtube.com/watch?v=lMwSUIkBfXw&feature=related
[/URL]
 
If you open a bleed off valve on the top of one of those tanks your water would not rise it would fall and air would be let in, not out. Unless they found some way to bypass gravity in which case I want one lol.
But i will look them up some more and see if i can find an explanatioin for it.
 
tjfish said:
Ok, i understand the physics of the one i posted, and the koi pearl.... but the open bottom tank which i have seen before still baffles me due to the fact that every open bottom tank i have seen has an air bubbler in the upright part, which baffles me because in theory that would be working against the vacuum that is holding the water from ending up on your floor....can anyone explain this to me?
Maybe im just a lil dense on this one lol.
Click to expand...

There is an air pump on the top, that's how u fill the upper tank. U work the pump to take out the air while adding water in the bottom tank and the water will get sucked up the upper tank. If u work the air bubbles, then u keep the upper tank pump working to constantly suck out the air ur adding.
 
tjfish said:
If you open a bleed off valve on the top of one of those tanks your water would not rise it would fall and air would be let in, not out. Unless they found some way to bypass gravity in which case I want one lol.
But i will look them up some more and see if i can find an explanatioin for it.
Click to expand...
I couldn't remember how they did it. But they must have a vacuum pump pulling air out at the same time air bubbles are going in. The trick is the get the vacuum to pull the same amount of air the bubblier is putting in.
 
sounds like a lot of extra effort to keep it filled when you could just skip the air bubbler all together and close the valve on the top to seal it after you pump the air out to fill it then you would only have to pump more air out every once in a while when it started to go down a lil. and put a small powerhead pointed up to the upper part to keep the water circulated.
Also that way you dont end up with a flood on your floor when the power goes out and the air pump stops :p
 
What they do in the beginning is manually suck the air out by mouth with a tube and the water rises. They have to add more water as the level on the bottom tank goes down as it rises up the upper tank. The water should never go down if the seal around the bottom edge stays below the water on the lower tank keeping it sealed.
 
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