it could double as a urinal
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| A most interesting Fish tank. http://byap.backyardmagazines.com/forum/viewtopic.php?f=5&t=4673 |
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| Author: | KudaPucat [ Dec 24th, '08, 19:19 ] |
| Post subject: | A most interesting Fish tank. |
I found this whilst looking for cool fish piccies, it is most interesting, though probably cost prohibitive. http://www.geekologie.com/2007/03/impossible_fish_tank.php I do think the idea is cooler than the implementation...they could have done it much nicer, the little hand 'basins' look ugly and added on. A simple split wall with the lower half protruding further than the upper haver would be much better I think, and looked heaps cooler. |
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| Author: | Outbackozzie [ Dec 24th, '08, 19:35 ] |
| Post subject: | Re: A most interesting Fish tank. |
yeah agreed, looks tacky |
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| Author: | KudaPucat [ Dec 24th, '08, 19:58 ] |
| Post subject: | Re: A most interesting Fish tank. |
but you gotta admit the possibilities are cool... Now I just gotta find some1 with a heap of money, and a public place they wish to attract ppl to. |
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| Author: | ElfNori [ Dec 25th, '08, 02:35 ] |
| Post subject: | Re: A most interesting Fish tank. |
I saw a home fish tank that was a bit that way . . . let me find the link. Here you go. The bottom of the tank is open, not the top. Water's kept in by virtue of the bottom of the tank is'n't open to air. Open bottomed fish tank video The thing that would concern me . . . anyone with a tube or straw could drain the tank down to the level of the holes cut in the side of the tank. |
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| Author: | anthony.faircloth [ Dec 25th, '08, 03:15 ] |
| Post subject: | Re: A most interesting Fish tank. |
Man, if that vacume pump breaks there's gonna be a mess!! T. |
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| Author: | bundaberg kid [ Dec 25th, '08, 04:05 ] |
| Post subject: | Re: A most interesting Fish tank. |
it could double as a urinal
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| Author: | KudaPucat [ Dec 25th, '08, 05:19 ] |
| Post subject: | Re: A most interesting Fish tank. |
ElfNori wrote: I saw a home fish tank that was a bit that way . . . let me find the link. Here you go. The bottom of the tank is open, not the top. Water's kept in by virtue of the bottom of the tank is'n't open to air. Open bottomed fish tank video The thing that would concern me . . . anyone with a tube or straw could drain the tank down to the level of the holes cut in the side of the tank. Yeah we've seen that sort of thing before too... fish loft I think it was called... looks cool huh? so, the reason that works is by virtue of the top not being open to air, and air not building up inside, allow the water to flow out. How then does he get away with an airstone in there? surely this would create an air pocket and empty the tank (slowly) |
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| Author: | Sleepe [ Dec 25th, '08, 05:56 ] |
| Post subject: | Re: A most interesting Fish tank. |
What I don't understand is how they manage to keep enough DO in the water. I thought that if you put water under a vaccuum it tends to degass. |
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| Author: | KudaPucat [ Dec 25th, '08, 06:16 ] |
| Post subject: | Re: A most interesting Fish tank. |
It's not MUCH of a vacuum, and in the video setup, there is an air pump... don't get that. To get 10m of water to stay there, you need -14psi/-100kPa vacuum. but to get 1m of water to stay there you just need 1.4 PSI or 10 kPa vacuum But as ElfNori pointed out, there is no need for a vacuum pump. If the top is enclosed, you can make as many pockets like that as you wish without the water coming out. Then all you need to do, is suck the excess air out every now and then... Still that will result in a vacuum generated by the water of 10kPa/m RE DO at -10kPa? I have NFI... but I'm guessing it's not that bad. It's the equivalent of 1000m above sea level. Do fish live that high? |
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| Author: | ElfNori [ Dec 25th, '08, 06:17 ] |
| Post subject: | Re: A most interesting Fish tank. |
The air is taken from the top of the tank that's closed. It's just cycling the air back through the water. |
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| Author: | Sleepe [ Dec 25th, '08, 06:38 ] |
| Post subject: | Re: A most interesting Fish tank. |
RE DO at -10kPa? I have NFI... but I'm guessing it's not that bad. It's the equivalent of 1000m above sea level. Do fish live that high? Think so some of the lakes are pretty high however they have a large surface area for exchange. Glad someone can do the math  Nori I'd get a bit edgy having something like that, its like a disaster waiting to happen 
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| Author: | KudaPucat [ Dec 25th, '08, 06:43 ] |
| Post subject: | Re: A most interesting Fish tank. |
A crack in the tank is disaster no matter your setup... so the only other way for air to get in there is outgassing. In which case disaster will be a LONG time building... you'd be able to weather 24 hrs without power I'd expect... But yeah, it would need maintenance. |
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| Author: | Sleepe [ Dec 25th, '08, 06:54 ] |
| Post subject: | Re: A most interesting Fish tank. |
I'm a great believer in Murphy's Law KP , and the more complicated things are, the worse it gets.
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| Author: | KudaPucat [ Dec 25th, '08, 07:03 ] |
| Post subject: | Re: A most interesting Fish tank. |
Anything that needs maintenance can by definition break down. So I agree, complexity is bad for critical systems. But do you REALLY want to get me started on Murphy's Law, and the misconceptions so many ppl have about him that you've just demonstrated? After all, it is Christmas. All I will say, is that Murphy's Law in this case is completely irrelevant. 
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| Author: | DanDMan [ Dec 29th, '08, 23:36 ] |
| Post subject: | Re: A most interesting Fish tank. |
Its like taking a glass full of water, putting a playing card over the top and turning it upside down. The water stays in the glass from the 14,4 psi air pressure. |
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