High guys, I've been playing around with my biggest internal filter parts and had a crack at improvements
Now it runs twice the amount of surface area and pumping 1800ltrs p/h hasn't lost any effeciency (at all that I notice)
It was a bit of messing around - just to get the perfect fit for the parts, but all the gear you need to it is at your local hardware store.

See what your imagination can come up with.

J