I am making small dividers to hide and protect the intake and outflow of the eheim. The outflow is on the right and will come down to an elbow attached to pex piping. The egg crate is to create a faux rock that will hide everything completely, decrease water agitation for the newts, and stop them from crawling behind the piping. The other block on the left is to keep sand from entering the filter intake. The intake slides down into a sponge that is cut to fit perfectly in that spot. This leaves no room for newts to hide or get hurt back there.