I bet you have a digital ballast. The updated instructions will explain, it has to be seperated by 10', from a digital ballast. I sent back 2 good ones back before talking to C.A.P..
Buzzman333 Reviewed by Buzzman333 on . CAP PPM-3 problems I recently got a ppm-3 and immediately noticed that it was not always shutting off the solenoid valve on my co2 tank after the relay point (1600 ppm) had been reached. It just kept going up until about 4,500 ppm until i noticed and restarted it. It goes for about 3-5 hours of correctly shutting off the valve and then eventually it will glitch and keep the valve open. now i have a seperate issue. originally the co2 ppm in my room was 900 at base level. outside on my lawn between trees Rating: 5