Oh noo that thing doesnt even have a difuser, and yeah ice on top of the percolator is important. I chop my cubes in half with a butter knife and then slide them in gently, I always tip the bong so they slide and dont fall............Alot of people dont realize what the difuser the perc and the ice do for you hits, it makes a smoking experiance that most dont know. Everyone hits it with iron lungs and kills them selves its small but powerfull. I dont think I had to sign for it but its been a while