That makes sense. However right now I have my siphon line on a 3/4 inch bulkhead and my dry emergency on a 1 inch bulkhead. To do as you're suggesting I would have to ru. The 3/4 as the dry emergency. I can do that but I thought it would be best on the larger diameter bulkhead.
Does anyone run a dry emergency on a 3/4 inch bulkhead? My tank is a 60g cube.
Thanks in advance for the help.
Not a good idea. You always want the dry emergency (never runs water except when the siphon clogs) to have the greater capacity of the two. As far as you issue, I have yet to run across a situation where 90s/horizontal runs are the only option. Some of the time, is the "operator" is more interested in "clean appearance,' rather than solid function. Not always the case, just sayin. In rare cases, I have resorted to spa-flex, to repair drain issues.
Most of these problems are avoided by thorough planning before hand, rather than blindly taking advice on individual pieces, then implementing that piece, without looking at how that piece will affect everything else. Especially when it comes to sumps, and where to put the plumbing in the tank. For instance if you have a corner overflow, the drain section goes under the overflow. If you have dual overflows, well you are kinda stuck...just one reason not to purchase rr tanks...but the drain line can be 45°'d to the other end, just might not be as pretty.
I really don't see unions as the solution either, just two more places that will eventually leak...Unions are way abused in this hobby.
You don't need 45° down, though it is preferred. less than 22.5° is cutting a bit close, but still headed down. Trying to get "off angles" (other than 90 and 45) causes stress in the joins and pipes, and really is not a good idea, unless you can source a 22.5° fitting, which is available.