Hiya's,
Sorry to keep spouting bout these but i saw OM47's post
Out of 3 of the 2000ef's (1 running my moms rio 240 tank, other 2 now running my 150g tank)
Got my moms in february, going fine and not long did a clean, slight brown gunge as usual i guess around pump impeller but nothing like a pond pump that's been in service for as long, this is running fine and quiet with no signs of impeller shaft wear
My first i think it was early march or might of been late feb, again going fine n quiet with no need to clean yet (i posted in the new fishtank so the date would be there)
My second was part cycled in a spare tank and is now running with my first in the large 150g tank, again darn quiet (again, posted in the new fishtank so date for this would be there somewheres)
Now as for performance/head etc
All stats given by manufacturers are basicly as far as i was told and have managed to find out go somert like this ...........
Max flow is from the very initial outlet from the pump (so in this case no tubing etc) and at sea level (so really zero head and no obsticles eg: pipe/tubing/bends etc etc)
Now as soon as you try to shove water or any liquid up this head-rating drops quite a bit, the obvious thing is to have the cannister as far up close to the inlet/suction-side of the pipework as possible without going above this level (hope that makes sense)
I look at things in the easiest light i can, murphys law really, if it's gonna happen it will instantly or just as the warranty passes lol
Thus far my moms 2000ef has done a continual 5mth run needing only 1 quick clean of the impeller and a new top floss layer (actually i swapped it out today as i needed some media to shove in a small filter for a friend)
My 1st 2000ef is not far behind hers time-wise being run and again is doing fine n dandy
So for me after checking the impeller which is usually in my experience the only would-be problem area i really cannot fault these, then again like anything people buy, you will get horror stories of this item is crud etc (don't most posts about items happen by having a faulty item ? )
If i or rather we do get a failure or problem you can rest assured i'll post about it especially if its withing the warranty time he he
And nope, nothing to do with allpondsolutions, just like to praise something that's 50% cheaper than what i see as an equivelant filter
(i see on the ebay site they have now added the filter floss layers so no need to contact them to get them as now you can just order as per other items)
So in my moms case and mine, these seem great value and great filters
Tony