I have a CO2Art Pro-Elite regulator with a second manifold. I was wondering how long of a length ofCO2 tubing can I run to a second aquarium. The aquarium that I want to run it to is about 20 feet away from the aquarium where the CO2 cylinder is. Will this work? Are there any special considerations that I need to take? I figured that a check valve close to and above water level would be necessary on the second aquarium. Any input will be appreciated.