CO2 hoses : how long maximum?

"teizman" wrote in message
ynet.net...
hi,

I m thinking about buying a CO2 (automatic) system with a classic CO2
bottle
from SERA.

Can I use very long hoses for the CO2 bottle ? (So I can put the Co2
bottle
in the cellar beneath the aquarium (thing this is more safer and more
discrete) With very long, I mean about 7 or 8 meters (=20ft or a slightly
more).

Or will this cause some loss or something else?

Main thing is to get the right kind of hose. I don't see why there should be
a limit anywhere near what you want in terms of length. CO2 as a gas is made
up of much smaller molecules than say Nitrogen or Oxygen & therefore will
actually leak through some materials - silicone Airline being the relvant
example. That said, if you are using bottled gas do you really care about a
small amount of leakage of this nature? The only thing I can think of is
that it will be more difficult to set up because the needle valve that
controls the flow will be downstairs attached to the bottle so you could be
doing a bit of running up & down the stairs adjusting the thing till you get
it right (either that or get someone to help & shout a lot!)

I've got a 7lb bottle in the cupboard under my tank & although I am aware
that if it "went off" it could make a bit of a mess I think the chances of
it doing so are somewhat limited....as long as you handle it properly I
wouldn't worry about it too much.

I.