For the past 6-7 years I have been using an EZ-Flo system for fertilizing orchids in my greenhouse. The tank has sprung a leak so I am looking at 1)replace the tank, or 2)get another system. I was looking at the Dosatron injectors. In the past I tried one of the brass hose siphon systems (can't remember the brand name) but I didn't like using the required water pressure. Any suggestions or critiques out there for a reasonably priced system for an 8x16 greenhouse. I think the $200 for a Dosatron is the maximum I would pay.