Yes, I am using that exact one on my 40 breeder. It was the only way to get flow from my return pump to the opposite end of the tank. You need to run it with a pressure rated pump though or else you will be dissapointed. It works as advertised as long as you have enough pump behind it.
I use them as well on non pressure rated and pressure rated pumps. The amp draw in both cases is lower however the non pressure rated pumps draw significantly less. .76 amps for a 1.9 amp iwiaki 1200 gph non pressure pump.
Flow unmeasured, but feels like a 3000gph Tunze Stream.
With a dart it should be fine....I've heard a rule of thumb is that they need around 1000 gph going through them to really work....I tried them with a snapper that with head loss was pushing probably 600 through each return, and they did not work. I think aquacave has them pretty cheap, and they are local so standard shipping is usually overnight.