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					Originally Posted by  lastlight
					 
				 
				You risk siphoning your tank if you fully submerge. I think the instructions also state to not do this. Since my doser is under the floor I can't press the button to see if it can pump past the blockage/skinned over end of the tube so I just clean it out quick. I imagine it still pushes past it but I'd rather be safe. 
			
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 why would you siphon, thought the rollers continuously press on the tube.