Well its hooked up on my tank now. quiet ! and the design is much better than other HOB's in certain aspects. I like it so far Ill let you know what I think in 24 hours if I have any floaters. It moves a TON of water

My jack dempsey is hiding from the waterflow lol i guess they dont like fast moving water. Too bad for him I guess with a 300 GPH HOB
An AC110 a eheim 2215 and an undergravel plus my bubble wall thats powered by a whisper 10-30 (Lots of bubbles)
is quite a bit of filtration and movement

I like it so far