Testing a new sleeker bubbler design. So far it is working great and has stood up to many flash back tests. Easy to build in about 30 minutes. All plastic construction with a 5mm thick clear acrylic tube (polycarbonate will not work) and a simple rubber cork for a blow off valve. The cork can be attached with nylon string and screw so you don’t lose it. Cheap and effective but is not self resettin…