[MaadDaawg]

a 1260 ??????

or the lesser made for aquariums?
Eheim explicitly says never restrict the intake - output only. Lord knows I never do anything without following rules

[Witchdoctor]

I had a big fat reducer on my intake and was still running strong after 2 years

[MaadDaawg]

maybe I'll give it a try.... maybe

I use it to mix my two 100gal D.I. tanks right now.

[Witchdoctor]

I kinda like the aproach Rick takes, drop that rad in a cooler of ice water and any pump looks good