Only thing i found difficult was proping the system up in the top of the rubbermaid, i wound up glueing it in but it didnt work, so i had to make legs on it, so it wouldnt fall over over, im sure there is an easier way to do it, but i had it all together and didnt think about it till i was done. let me know if u have anymore questions, ebay has these things up for like 400 buckks its alitte retarded to pay that much for all plastic materials that cost no more the 50 bucks, the most money is the 20 dollar pump.