CO2 setup and help!

www.water-testers.com for a milwaukee regulator for $85 shipped
http://www.beveragefactory.com/draftbeer/tanks/co2.shtml or ebay.com for co2 tank

You would probably be fine with a 5lb tank and that will run you $65 shipped

If your lighting is good and you get the co2 + ferts.. In 2-3 months the system will pay itself off with the plant growth/trims/plant sales you will be doing.

maybe you can find a used setup for around 250.00 i see them sometimes

Get the regulator online, Bk828's suggestion is good. I would recommend looking for a CO2 tank locally. You should be able to get one at a welding supply store. Usually they swap out the tanks each time. If the CO2 tank is hidden under your stand then this is a good option since they take care of the hydrotesting (pressure test) that must be done every 5 yrs. Its also easier to find a place to refill them if you can just switch it out instead of paying more for an aluminum tank you want to keep. Also when you buy a CO2 tank locally they often come filled.

I would also recommending getting the largest CO2 cylinder you can hide well. The reason is they cost less to fill per lb and then you dont have to fill it as often.

Yep, regulator online at BK's site. Cylinder locally or at beverage factory(Bk's link). Finally, run the line from regulator directly into cannister filter intake.

for a 36g tank will take a year +

yes anythony... i would rock a 10 -1 5 pounder simply becuase you dont have to fill it up so soon.. ( not that every 3 months is soon) .. but i dont mean to thread jack.. but when i switch to a pressurized CO2 setup over my seachem excel method.. wil i se a hude differnce in plant quality ??

dark if your co2 is balanced with light/ferts then yes..