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Dante,

With a place with as much wherewithal as COSI Toledo I am a bit 
surprised that you need ANY of our help.  But I'll take a stab.

You don't mention how big a tank you are using. Is it sort of a standard 
20 gallon job?  Since it's breaking, I'm guessing it's glass? Why is it 
breaking - thermal shock or just old fashion  bangs and crashes? You 
could look for Acrylic aquariums. That might save you quite a few breaks 
from bangs and crashes. You could ask a plastic shop to make you an 
Acrylic tank. It is surprisingly inexpensive to have these things built 
- though more than buying 4 or 5 replacement tanks I'm guessing. You 
could get a hunk of Acrylic tube for a hefty price.  With a sealed 
bottom it would be pretty tough.  You could got to a glass shop and get 
5 panels of tempered glass to make your own tank....

You did mention a few benefits of the tank you're using, one important 
one being - it is an easy to obtain, off the shelf item.

Let us know what you wind up doing - though I suspect for tomorrow 
morning it will be back to the pet shop one more time.


Joe R.
TheExhibitGuys.com

Dante wrote:

>ISEN-ASTC-L is a service of the Association of Science-Technology Centers
>Incorporated, a worldwide network of science museums and related institutions.
>*****************************************************************************
>
>OK, this is one of those things where you know there has to be someone out
>there who has thought of something better along the way...
>
>We use your typical 5 or 10 gallon glass aquarium to do dry ice experiments.
>(You know, floating bubbles, snuffing candles, the whole 9 yards)  Each time
>one breaks, I think "Gee, there has to be something better" but never get
>around to it and then before you know it, it's 2 hours before the program,
>so I run out and buy........another aquarium.
>
>We like the aquarium mainly because it is transparent and easy to see the
>bubbles floating and other stuff.  It also helps that it can pretty much
>hold up against the cold temps and is an easy to obtain off-the-shelf item.
>
>Now I'm calling upon the collective wisdom of my ASTC colleagues:  Who's got
>a better idea?
>
>I welcome your prompt thoughts and suggestions, as I need to buy one for
>tomorrow morning!
>
>Thanks!
>
>Dante
>
>Dante Centuori
>Creative Director, Education
>COSI Toledo
>1 Discovery Way
>Toledo, OH 43604-1579
>419.244.2674 ext. 106
>419.255.2674 FAX
>[log in to unmask]
>www.cositoledo.org
>
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