I'm building my equipment list for my new 75 gal reef setup, and I'm currently trying to choose my water filtering method. I was looking at RODI filters, but I really don't like the idea of all the waste water put out by the RO section of the filter. I've read the ideas about reusing the waste water, but I don't think this is going to work for me. Is anyone else running just a DI filter with success? Is there another filtering method that can be paired with DI, other than RO, to produce high quality water?