Long distance split co2 lines

[Anonymous]

I also run mine at 10 psi.

The issue is not about regular application when everything runs smoothly, but what if the reactor on the top floor is at a pressure, and the CO2 get off-line... will a siphon (albeit slow one with two needle valves that it nees to get thru) be created that will drain the saltwater upstair to the planted tank downstair?

 

[Greg Hiller]

I've been running this way for about 4 years with no problems. When a CO2 bottle runs out the regulator usually ramps the outlet pressure up rather than down (I know, counterintuative, but true) until the bottle is COMPLETELY empty. I've never run a CO2 bottle down to nothing. If you were worried you could always put in some check valves.

 

[Anonymous]

Don't notice any ramp up/down issue with regulator.... but I also made the suggestion to Dan for the check valve too.