well, it sorta looks like the one i have, and they aren't going to know how far away your pump to your skimmer will be.
you probably need to get some 5/8 clear tubing. i *think* it fits right onto the mj1200 (you'll want to take it to the hardware store), but you'd need a barb attachment on the skimmer and they won't know what size you're going to use either, so putting in a barb fitting when they don't know what size tubing you're going to use isn't that great of an idea.