I hope Eheim pay you well Bob - if they don't they should do! :lol:
Eheim will repay me when I go to that great fish house in the sky.
A whole set-up with Eheim filters and as I will be immortal it will be for ever bliss I will be empowered with a brain that has every Eheim part number and will spend my days rebuilding and testing failed and rejected Eheim equipment. Death holds no fear for me now LOL
Naturally should I descend to the living hell it will be all Fuval and I will spend eternity fixing the crappy things for people who over stock over feed and don't do water changes and keep ruddy guppy's and swordtail.
This is why I am so kind and understanding preparing my self for the next life.
But being serious I use Eheim because in 40 years plus of fish keeping I have yet to find a more adaptable and sturdy filter.
Regards Bob