Need a recomedation CA reactor or 2 part dosing?

[o.c.d.]

Keep in mine if you buy a "package" reactor, when you go to fill the Co2 tank you may have problems. Some places will only fill their tank and or you will have to wait for your tank to be filled, days some times and not always to case. I bought my at OxyPro (good price)and I just walk in and they take the old and hand over a full one, quick and simple and only hours of down time.