
I have no idea how long this hygger wave generator will last but the design, flow rate, waveform and dimensions are incredible, perfect for a nano reef. I have a Fluval EVO 13.5 and from what I've seen on youtube so far, no matter how expensive or complicated the shaft generators are, everything looks bad in a nano aquarium due to the size. I want the display to show the reef, not a display full of waveforms bigger than the rocks in the tank. efficiency? 150% for the nano tank. When properly placed in the aquarium, you can see the sand particles flowing down the bottom circle one at a time without clouding the water. Anyway, finally a breakwater for nano aquarists who want to preserve the natural beauty of their aquarium without showing a windmill in their nano aquarium. Easy to program, worth the money if it breaks tomorrow I will keep buying it unless the competition comes up with something similar or smaller for a nano reef tank. I cannot display the view of this wonder in my aquarium. For unknown reasons, Revain won't let me upload my photo.

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