Brendan DJ Murphy wrote:

My research has shown conflicting answers.. Some quoting "1 pond-volume
of
water every 2 hours", others saying "2 pond-volumes of water every hour"

That's ponding for you. ;-) The above can all be correct, based on size
of pond, size of filter and residents within. ~ jan


Is there anything wrong in adjusting the flow to the maximum rate that the
filter can handle even if it exceeds the recommendation?

In other words, is too much filtration a bad thing?

The key is "...the filter can handle...". Providing that the filter really
handles it, it doesn't make much difference, but figuring out exactly what
the filter can handle is tricky. Too much flow encourages channeling -
where the water manages to bypass most of the filter medium. Too little
flow can mean that the filter actually isn't working up to its capacity.
So, as fast as it can handle without channeling is good, but identifying
channeling is difficult.
--
derek