Thanks for the information so far. There is a Clippard distributor very close by, so I just emailed them about the needle valve.
As far as the lights, they are 2 55w PC's (9325k), I was thinking of changing to 6700k. Do you think I have too much light? The tank is 18" tall. It's an Oceanic hood, and came with the 55w PC's. Would it be ok to go with a smaller wattage?
And yes, I'd like to jump right into a pressurized system. I've had freshwater tanks for years (on and off) and have always had them planted, but never had too much luck. I figured I go for the best system available within reason. I'm still confused as to what to do once the CO2 leaves the regulator. How do you know your adding the right amount? I will probably go with the DIY method listed in the link above.
Tap water results:
KH = 6.4
pH = 7.2
gH = need to get a test kit
Tank was set up 11-16-03
Matak- I don't know anyone there actually. I'm a big Anne of Green Gables fan and Love to visit Toronto. when I visit I stay at a B&B in Uxbridge. I try to get up to TO at least once a year. I've taken the (tourist) train from Uxbridge to Stouffville, and then drove though it another time. You live in a beautiful area!