First let me start off by saying I own both of the major brands Tunze and Vortec. I prefer Tunze over Vortec due to the amount of noise the Vortecs make after a while. Currently my MP-10 is louder than 6 Tunze pumps running. I am just waiting for it to die then it goes to the trash like the last one. Now for my initial assessments of the WP-40 this thing moves water. It's not dead silent but not noticeable either. After a while it just blends into white noise. I was testing with the TV off and the return off and I could not hear it from a few feet away. I turned off all my other pumps in the tank and and turned off the return. I am glad I did. The W1 mode half way up makes at least a 1" wave in a 6' long tank! That is saying a lot. Here are two videos of the pump running. If this pump last more than a year I will consider a great investment. I am impressed and will let it sit on W1 mode today and see how the corals respond. If you have ever been snorkeling or diving the corals move just like in the ocean its crazy!
Front View
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Side View
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