i learned along time ago that you dont have to suck on the hose to get the suction started
ok, i will tell you how

take the air tubing, hold it under the water (about 10" or so), then place finger/thumb on the other end of the tube, hold the tubing up and let the water go to about the middle of the tube(Not draining the water out) now put the the other end back in the water and take your thumb off and this will start the siphon
hope thats not confusing, when i use to breed Chichlids, i would take the babies to the LFS and acclimate them myself, this can also be used with the siphon hoses (waterchanges) if you dont have a Python
TD