01-30-2012, 11:26 AM
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Originally Posted by twocents
I only have box foam filters. I guess I have found some of the limitations of them.
I witnessed some years ago a professioanal aquarium cleaning outfit and they had a 'hang on tank/ filter that did a final filtering of the water while they cleaned.
I think what the fix for me will ultimately be is that ye ancient mariner gravel vacuum cleaner.
What you have described is most likely a [Vortex] diatom filter that uses diatomaceous earth to filter micron particles from the water resulting in extremely crystal clear water. They are great, but the water flow is very fast so it is best suited for periodic use to polish the water.
I have found similar water clarity results (as mentioned in this thread) using [spun polyester] filter wool in the last stage of my filter along with Seachem Purigen which is a synthetic adsorbant that attracts dissolved organic compounds.