Yea but you can buy contractor packs of elbows (and maybe even tees) at 10 for $2 here. sounds like a good plan to just test it out and see if it works.

but I do agree that an over flow with two 1" hob siphon parts would be more useful. In my last testing I used 1" (or1/4") hob parts (2 of them) to a center 2" up then down part. The two overflows were much easier to mount on the tank. It also easily drained a mag 7 pump pumping against a 4" head.

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fw leiden since 1979, fo salt since 1979, mixed reef 55g 2002-2009. Strong emphasis on the tank taking care of itself. Balanced with plant life, no water changes, tap water, no filters in FW. Only dosing calcium, alk, mag in marine reef tanks. http://www.aquariumforum.com/f15/my-...ods-26410.html
recent tanks (till 2009) 7 years- 10g FW leiden 7 yrs, 55g mixed reef 7, 2 yrs, 20g FW leiden, 10 g fw leiden , 29g mixed reef, current tank 55g leiden