I have a Prizm Deluxe and am more pleased with it than the Bak-Pak I have.
The unit is much more easy to remove from my tank (20Gal) and clean than the
Bak-Pak...

However I did have to make some modifications to get it to my liking.
I had to an adjustable spacer to set it back farther from the tank. I also
had to restrict the flow on all but two of the intakes on the surface
skimmer cup to get more efficient surface water removal.

The primary drawback of their design is that the air inlet to the pump rests
dead center over the axel shaft of the impeller. Over time, Hair algae will
get wound up there and get tall enough to stop up the air inlet. But hey, it
needs to be cleaned on occasion anyways and hair algae is often a minimal
concern in a well established tank... When this happens, the skimmer will
suck dry with a surface skimmer attached.. Which is good because the
increased flow at the outlet can cause leakage over the sides of the outlet
and make a mess. For this reason, I would not use one without the surface
skimmer...

The best design feature is that the air that flows into the pump-back into
the cup is a closed system. This means NO STINK like with the Bak-Pak which
vented collection cup air and smell out into the room. Also this creates a
negative pressure in the cup which aids in the expulsion of the skimmate.
I am surprised more manufacturers do not do that. I plan to modify other
skimmers I use to do the same thing and see how it works.

Stephen
"Larry Day" wrote in message
...
Does anyone have any experience with the Prism Pro Deluxe Skimmer. If so
please post a reply. I currently have a Back Pac and am a little
disappointed in the performance. Thanks