This paper is out in the open. It is not some sneaky claim, so Eheim can only respond with a better product and then prove it with a creditable report and evidence . Such info is good for consumers like us esp when we are paying premium prices for such products .
One interesting thing abt the Matrix is that it creates a condition where both aerobic and anaerobic bacteria can be housed. Aerobic resides near the outer surface while anaerobic resides in the core . Flowrate definitely will affect the proportions of both types. So far when we talk abt the popular brands like substrate pro, biohome , BH, mr aqua etc we focus only on the aerobic part.
More info on the website suggests that the Matrix is suitable for both submerged and wet/dry situations .
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