I have a Wave CO2 regulator with solenoid which i purchased about a week ago from here; http://www.firststopaquatics.co.uk/acat ... noid_.html This is my first foray in pressurized CO2. Like an earlier poster here, viewtopic.php?f=37&t=9766, I began experiencing problems with this regulator this morning. In particular, when the solenoid turned on the solenoid started to buzz rather loudly, which it never did before. Furthermore, when touching the metal pipe that connects the solenoid to the regulator the heat being produced was almost too much to keep my hands on it. Is this dangerous? Is this normal? Is there a way to stop both of these problems? Thank you for your input!