hensonc4098
Fish Herder
Can't really recommend a specific brand, just look on ebay for ones. Get a regulator with a needle valve built in - saves a lot of hassle. Your bubble checker, drop checker etc. you can get cheap from china, but I would get a regulator from a seller in the US as this is the most important part of the system (apart from your canister) and it's almost impossible to get a refund or replacement from chine if something went wrong with it. Also look for a regulator with a solenoid built in, then you don't need to buy one separately. If you can't get one with it built in then don't worry, but it just makes life a bit easier, and we're all for that 