I called another shop (the only other known shop in Belgium that know
anything about CO2) and they also told me to put the bottle into the
freezer!

So I did some searching on internet, and came up with a site that use CO2 in
car racing. They explained that CO2 is not a gas, but a liquid that happens
to 'boil' at a relatively low temperature (about 112°f / 42°c), so therefore
to get max capacity into the CO2 bottle, it should be very cold.

Seems they're not so crazy here !
But I do find it weird, I never heard anyone on this group mentioning it
before. But Belgium is right next door to Germany, where all this tech
comes from.


"wiggywacker" wrote in message
...
Hello!
I've finally bought myself a CO2 bottle / regulator..... and I need to
have
it filled up.
A shopkeeper told me I have to put the bottle into the freezer
first....can
you please verify this? and give me more detailed instructions on doing
this?

The bottle is 1,5 liters.........how long do you reckon that would last
for
a 180 liter aquarium with 60% plant coverage?

Thanks =D