I don’t know about you, but I haven’t even had to take the motor off my filters much since I first set them up...maybe once or twice in the last 5ish years....
Ditto. The only time I have ever had to remove mine was years ago when I ran sand in all of my tanks, which did result in some damaged impeller shafts and impellers on those AC units. No issue with the O-rings, ever. Have I mentioned that? lol
Best performing mechanical filter runs on gentle flow, as excessive gph will just clog up the filter faster and prematurely.
I clean the AC filters in my 125 gallon set ups once every 3-4 months. Is that what you mean by prematurely?
Look, I don't care what filter anyone buys, it's all good to me - but some of the propaganda being posted here about AC filters, and filters in general, is just plain goofy.