Hi folks, recently my oase filtosmart 100 seal failed, and my Heath Robinson repair did not last either, I have not been very impressed with this little filter and has always been problematic. With a waiting list of 6weeks for parts, I am considering buying the bio master 250 Thermo. If I do this can I reduce the 17/22 pipe to 12/16. I ask this so I don’t have to buy new lily pipes.