Quote Originally Posted by waste View Post
There's nothing wrong with putting the pump and filter directly on the pad. You may find, though, that you need to put a 'patio block' (~ 8" * 1' * 1") to get the pump's intake to match up with the existing plumbing. The only reason to bolt a pump down is to reduce the noise caused by vibration when the pad isn't level - but a wooden shim will also fix this.
Hmmm... Is there anything wrong with plumbing down from the existing plumbing to the pump's intake which would create an upside down trap of sorts?