I use a gallon pitcher with an opened bottom handle. Once I get the filter running I submerge the pitcher and put both hoses into the pitcher making sure not to allow the intake tube to hit the air. I pull the mostly full pitcher out of the water and hang it on the rim of the tank by the handle (pitcher still in the water). Now the filter is only filtering the water in the pitcher. I add my diatomaceous earth and wait for water to clear in pitcher. After clear I lift the pitcher off of the rim and slowly lower it into the tank keeping both tubes submerged (no air). I'm now filtering the tank.So once you prime it in the bucket put the bucket in the tank?
HTH