I did a lot of testing on the Eheim 2078. The Hydor drops flow by 9%. The reactor and associated twists and turns another 8% or so. Eheim rates the 2078 at 1100l/h or about 250gph flat out when loaded with the standard Eheim media set. I confirmed that with a simple over the top test at 1050l/h. Not much upside if everything is removed. Lots of flow test detail on the blog.
The 1260 is rated at 600gph and will be added to a secondary parallel circuit. Flow *will* happen without stuff in tank.
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Last edited by Jim Miller; 03-04-2011 at 12:24 PM.