yeah ive had one for about 6 months, runs great, doesnt quite do the job i think it should, the water perameters are fine but the collection cup just doesnt seem like the water is brown/green enough out of there, i do have a very low bioload for a 75 gallon(I have the built in refugium model) and i am running another filtration device but, seems like it could do better. it can be loud you just have to adjust the venturi properly and the sound goes away...