Motor mounted under table - bucket on top of table. Cages 4' tall (QTY: 2).. Ran right after install - ran dry for a couple seconds before I caught it and turned it off. Turned it back on after adding water to the bucket, but doesn't seem to be self priming. Is it because my hose is too long? There's probably 6-7' of hose going to the top of the first 4' tall cage. Should it be more of a straight line with far less give? I don't want to cut more hose off until I know for sure.