Lol this is a great filter but you gotta love them Chinese folk! lol the box mine came in has such screwy english its hilarious!
What is the valve block? Maybe that's the problem I can't get anything going with this.
Could the problem be I am using this in a 55 gal turtle tank that is about 1/3 full. Could the water level not be high enough? The strainer is about 3 inches underwater.. I filled it with water but can't seem to get it going---