Most of my greenhouse collection is Catasetinae, but some are things like Phals, Dendrobiums, etc. The Catasetums require tons of fertilizer (aka full strength 20-20-20) during the growing season. The others, not so much. As of right now, I have a Deionized water system that attaches to a hose outlet. I fill up a watering can, and water individually. This has become quite tedious, as the collection is large, and requires multiple fills of the can. I'm just looking for how other people deal with irrigation, and how their system is set up? I'm thinking perhaps my best bet is to mix in Osmocote with the Catasetums and then set up a misting system that has fertilizer injector. The only other solution I can see is to set up two parallel watering systems. Finally - does anybody have a good RO system? I'm getting tired of recharging the DI resin by myself. Also what size pump would you recommend for a 10 ft vertical rise?