I just picked up 2 of them to use until I can save enough for a Tunze.
I see them as a cheap temporary alternative. From my research and
talking with others that use the Tunze they are much better built and
will last much longer than the Seio. I also like the Tunze model that
gives you the ability to adjust the amount of flow whcih you cannot do
with the Seio.

Ken
gaijin wrote:
Are these a reasonable alternative to the Tunze pumps? They are a
fraction of the cost.....