Yeah, I bought the jet lifters for convenience, but they really are just nice PVC (a bit thinner than your average PVC though). I think the key is that they turn and poke through the foam wall. I'm thinking a small desk-fountain type pump for behind the foam (if you don't want to do the air powered) and then a circulation outside would work for you. Good luck!
I believe the advantage of the jetlifter is that it uses curved part rather than a 90 degree elbow to maximize flow. not that you couldn't do it yourself....
20L My Other Tank: OEBT Shrimp
40B Inlaws Tank: 2 goldfish
75 Main Tank w/ sump: 5 Glossolepis pseudoincisus, 5 Melanotaenia boesemani, 10 Melanotaenia praecox, 5 Melanotaenia lacustris, some cories, a bn pleco and rainbow fish fry