Hi. I'm new to the forums, but everyone seems very helpful. I've kept aquariums for a few years including planted ones with varying degrees of success because I never used co2. I Recently purchased a kegerator and have a taprite regulator with two product lines and gauges (1 for keg and 1 for aquarium hopefully). The taprite product page says that they are 5/16 barb shutoff with check. Is that the standard size for barbs? I'm looking to buy the rest of the equipment for my system. Are solenoids sold without regulators? If so, will they fit my regulator? What else do I need?