Protecting a Closed Loop Intake

[TheReefGeek]

With minimal water spraying all over my fish room, the closed loop is up and running. The 1.5" PVC with cuts in it for 18 inches has almost no suction per "slit", even the weakest fish could fight off it, and snails should have no problem either.

Thanks for all the suggestions, now im off to finish up my new return. (The barracuda was my return throttled down, no it is wide open on a closed loop)