
I've been using Mr. The Aqua Turbo Diffuser 400 has been around for about 3 weeks now and none of the problems reported in other reviews so far. The diffuser works well and creates very small micro-bubbles in the aquarium. I use a high tech setup - 1 to 1.5 bubbles per second. The diffuser is everything you see in the picture, no other items included. You will need your own tubing, bubble counters, check valves, etc. if you use these. The only thing to note is that the 400 model is a fairly decent size - it takes up about the same space as a circulation pump (like the Hydor Koralia Nano 240). The suction doesn't seem very strong - I have some java moss and the free floating bits always seem to be penetrating something with the suction - none so far on the inlet of this unit. So far the device is working fine, but I'll update if that changes.

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