Join Date: Dec 2015
Location: Southern California
I have a penguin 350, I had he same issue with too much flow. I cut a few pieces of filter foam, about 1/4" thick and 1/2" tall, and wedged it in the outflow on each side with the length being slightly larger than the edges of the outflow. The water cascades through the foam thus greatly reducing flow. Problem solved. I'm thinking of trying a less dense foam next because it reduced the flow so much there's hardly any surface movement. Not sure if the Emporer has edges on the outflow like the Penguins, but you get the idea. There's endless possiblities for securing the foam in place.
It's not the floss type of filter foam, it's far more coarse than that. I doubt filter floss would hold the shape. I got my filter foam from Big Al's Online but you can get it from many places. I'll post a pic of the fix as soon as possible.