Hi Roger,
I would be interested in a pair of them when they arrive. I had also thought about hiding them behind a piece of acrylic so they would not be seen from the front. I like the rock idea better though.
I am still debating on locations for the streams. Put them on opposite ends of the tank and have a surge motion or to put them on the back corners and have them blow in at a 45 degree angle into the tank.
I realize rock placement and such will be a factor, have you seen both of these and have an opinion?
Thanks.