On Apr 26, 7:36 am, "Jeffery Moyer" wrote:
it works but way to good, in less than 2hr's I about suffocated my mollies I
need a gang valve or sumthing to reduce the flow of co2, still looking for
ideas though

"Jeffery Moyer" wrote in message

...



Just to give you an idea of what you are looking at...

When held at room temperature solid CO2 will expand completely into a
much larger volume of gas. To prevent this you must either supply
enough volume for it to expand into ( a big tank) or apply enough
pressure to liquify it. WHen compressed at about five atmospheres (to
the best of my memory) CO2 will liquify at room temperature, so what
happens is the solid melts, expanding slightly into the liquid, which
evaporates into the container to maintain a constant vapor pressure of
about 5 atm (or around 75 psia). That's about 60 psi about the
pressure in your house, so you need some gear that will be able to
handle that. Such equipment is already sold for planted tanks, though
they usually assume you want to use a commercially supplied CO2
canister.

Maybe... you could maintain a CO2 bubble under an inverted glass by
placing tiny pieces of dry ice under it. This assumes you have easy
access to dry ice, other wise I would just buy canisters.

Oh, and your story about the mollys cracked me up. I would have
warned you if I had read your first post in time.