Normal. Think about it, if water travelling back the tubing cannot pass the valve, where can it go? The most important thing is that the valve works and does not allow the water to move furthur back the tubing.
 Aquascaping lover
					
					
						Aquascaping lover
					
					
						



 
					
                                        
					
					
						

Normal. Think about it, if water travelling back the tubing cannot pass the valve, where can it go? The most important thing is that the valve works and does not allow the water to move furthur back the tubing.
Vincent - AQ is for everyone, but not for 'u' and 'mi'.
Why use punctuation? See what a difference it makes:A woman, without her man, is nothing.
A woman: without her, man is nothing.
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