Good deal. Tomorrow is going to be a busy busy day for me. I gotta fill the cylinder, build the reactor, make a bracket for inside the tank, buy a kH test, set my new light up, do a pwc on all my tanks, and then wait until the pipe cement has fully cured (i'm guessing overnight?). Ahhh, so exciting!
On a side note, would it be a good idea to use the same timer for my lights and the solenoid? I was just thinking that plants don't use co2 when the lights are off, so would it be better to have the solenoid shut off maybe 30 minutes before the lights, and come on 30 minutes before the lights? I can definitely buy another timer if I need to.