I could use some input. I do biweekly filter cleanings on my fluval due to heavy bio load. Lately I've noticed it's getting harder to reattach the input/output back onto the filter. The red locking mechanism doesn't want to side into a locking position. I've tried everything with repositioning the input/output to get it to line up. Today I almost broke the red locking tab. What am I doing wrong? Should I add some lubricant to help it? I'm stumped. Any suggestions?
You need to lube the O-Rings and it will slide in easy try a very small amount of Vaseline only enough to lube the ring.
On my 406 I replaced the stock hoses with 5/8 vinyl works so much better.