vovlolater, funny you should ask this. I was just getting ready to ask a similar question. I recently added a 5g nano tank, and am running pressurized CO2
. My LFS
told me to just use a cheapo airline gang valve and split it that way. Unfortunately, it is not working out too well. I am having a **** of a time getting it to balance between the 29G and the 5g. The little ball valve is just too sensitive to get it to balance under that much pressure. It also is a very fine line between getting the 2 diffusers to balance since the gas wants to take the path of least resistance.. go too far 1 way and no CO2
comes out the other diffuser, even if the valve is part open. I am looking at buying a 2 way splitter
off of ebay. They also sell a 3 way splitter
that might meet your needs if no one has a better solution.
FWIW, I have bought from this seller many times... very reliable.