04-05-2013, 02:25 PM
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Originally Posted by jaysee
There are similar complaints about top shelf products as well. I received one that leaked - seller sent me a new one and told me to keep the old one, which is nice because now I have some spare parts.
Every one of my filters are set up the same way - I have fluval ceramic prefilters in the first tray - they are supposed to catch large particles without restricting the water flow. In my experience they work very well. The next tray contains the foam mechanical media, ten the rest is filled with biomax. A lot of people here really look down on ceramic biomedias, but they are widely used and recommended on every other forum I've seen.
That doesn't mean they actually do what everyone seems to think they they claim they do. Ceramic biomedia can house lots and lots of beneficial organisms due to the minute internal porosity, that I will admit, and it sounds great on the surface. The problem is that it stays on the surface, the water does not flow through to take advantage of this possibly huge colony at any rate that is worthwhile. It takes pressure differential from one side to the other to force water through the ceramic material and that cannot happen while the water can flow around it.
Rough chips can act as a pre-filter... I might say that course foam works similar enough that the two are equal or that any argument either way is only over a very small difference in performance.