is it just me, or is the suction on the python not that great? I love them for filling my tank but I get WAY better suction with my manual siphon that doesnt hook up to my sink...I used the python to clean my gravel in my 125 and had to redo it with my other vacuum because it didnt pick up anything..btw I use the 50 footer. Also, really seems like a waste of water since you have to turn the faucet up full blast to get any type of suction..thoughts?