Eheim 1262 pump flow restriction

[FuEl]

I notice that the outlet size recommended is smaller compared to the intake size. I am running a 1262 following this recommendation and the flow is OK.

Recently I ran another 1262 in my sump, with no restriction on the intake. The bigger outlet size was fitted to accomodate 25mm Eheim hose, as opposed to the smaller outlet fitting recommended on the Eheim website. The flow was so much stronger. I could now supply water to twice the amount of tanks with this pump. Is there a reason for restricting the pump? Will the power consumption be the same regardless of the size of the outlet fitting used?

[teebs]

1) No reason for restricting the pump. Probably the only reason i can think of is that most of the equipment connected to the eheim outlet is using the smaller eheim hoses.

2) The power consumption will be the same regardless of which outlet fitting is used.