You can just use a standard airline gang valve. Instead of spiting the source off, you join them together. Just place all the valves all the way open to prevent back presure. Rolando At 03:48 AM 1/28/00 -0500, Aquatic Plants Digest wrote: >How do you connect 4 bottles of yeast reactors together? >I may try this on my 120.. > >Thanks, > >Todd