I had a quick question. Which pump/hose do I put the check valve on? I would assume it is in between the 55 gallon drum pump, and the controller bucket, but the manual says to put it in between the bucket controller, and the 55 gallon drum.... ? Am I just not understanding it right? Which one is it?
OK, think I found the answer finally...
So the check valve IS for the controller bucket's pump. (they really should explain why in the instructions like you did here). I assumed it was so water wouldn't be siphoned back out of the 55 gallon drum from that other pumps line, but I guess that isn't an issue.