Toms Tub

I've have a Nordic hot tub, warrior model... I have developed a leak where the hose attaches to the a jet. The leak is so minor that it will only drip when the pump is on, but i know that it is only a matter of time before it gets worse. My questions is, what is the method of connection here, glue, press in? I have been afraid to try and twist on the connection too hard, in fear of breaking the jets female socket (hose goes inside). The jet socket is clear, but i see no signs of glue. Anybody have experience with these? Tom