your beni bacteria does not live in the water, but on the surfaces, hence the need for a good bio media. if it lived in the water it be cloudy all the time, like a non cycled tank is.
Tested rides against normal maintenance and ridX with normal. The filer is half as dirty after 1 week on a 150 with 6 8" zonatus each.
Found this on youtube, using RID-X on a 150 gallon tank.