Hi RuGlu6,
I have a Schuran skimmer that is venturi driven and may lend itself well to some DIY tinkering as I have done the same with another similar Shuran. The one I have available is the Schuran Filter Rack I+S that is basically a Jetskim 120 but also has a Flow Box, 2 cartridge filters and 2 Eheim 1250s. It's brand new but may be more than you want to spend. When I bought it the retail price was around $850 but I will let it go for $450.
You can view it
here
Send me a PM if you're interested.
R7-12