So this is my first sump setup and I have never seen one setup in person so I have what may be an obvious question/ answer. I have finished my hard plumbing on my 125 and have a trigger 39 sump. I am in process of leak testing my build and noticed the egg crate slats and foam do not sit nearly in my bubble trap. Also the bottom one seems to float up at times . Where do the foam pad and 2 crate slats go in bubble trap?