Sump in Backwards, Problem?

[nosferatu51]

I decided to add a sump to my 75g. It is a 30g tank with a 15g built in fuge. It doesn't fit through the front doors well enough so yesterday I had to drain about 50g from the tank to lighten it enough to move it and gain access to the back. I then poured that water back in.
When I was done I realized that the sump was in backwards from how I had anticipated putting it in. I originally wanted the return (a Mag 950) directly under the return output. Now it will, if I keep it this way, have to make a Z shape to get back to the output in the overflow. Is it worth the effort of redraining and moving the tank (only about an hour and a half, but I'm more concerned about stressing the fish that much in 2 days) to swap it around or is the head loss not really that big a deal?
Thanks for the help.

 

[Sk8r]

I'm backwards too, in a 52g with a 9.5 mag pump, and the only way we could get this sucker in was through the top hole before the tank went on...so I'm stuck with what the installer did. I'd been out of the game for 10 years, and, faced with way much new equipment and not a clue where the hoses went, I hired it done. MIS-take. There are a lot of things I'd do differently. But I really haven't noticed much head loss issue. I'm not a z---i'm more of a large lazy S, but it is a nuisance.

 

[nosferatu51]

Well, either the outflow or inflow is going to have to be the Z shape, I'm just wondering if it's dramatically preferable to have 1 like that over the other I guess.