Ill bet if you actually measured the flow it would be about 1/2 that maybe. Is this thing with certified electrical ??It does appear to be a eheim knock off..but cory keeper may be right it may actually be eheim.. not sure
I purchased it to test it.
the construction is ok. the pump is quiet..I mean quiet.. there is no noise coming from the unit housing.. I actually lifted the output to see if it was running..it is.
but the point I was trying to bring is.. $49.99 plus $10 shipping. $59.99
there are a lot of folks looking to DIY and this is available as an option.
time will tell.. but so far it has been running with no issues..I like it because the trays give you quite an option for media..with a 320 gph it should make a good filter for my 29..nothing fancy but it is an alternative for homemade.