| I really can't say that any one type of filter or media is better than another, but I do think each has its own merits and promotes different mixes of microbes. I use several types of filtration in the hope that the diversity produces a biofilm mix that can withstand a wide range of stresses. More important in my mind is simply having a lot of filtration. In my old pond I turned over the pond volume every 45 minutes. When the current pond was built, I went for that same turnover rate with gentle returns. Moving water with the heightened exposure to the atmosphere is healthier water. |