Diatom filters are hardly ever used any longer for some silly reason, I think maybe they are just to simple and old school so people would rather rely on High tech chemicals, UV etc.
If you want to remove parasites, for whatever reason, run a diatom filter.
Bada Boom.......In a few minutes all "free swimming" parasites are gone.
I think they... like large under gravel filters... are difficult to find these days. Searching diatom filer comes with with a lot of broken links and out of stock.
This can be charged with diatomaceous earth but it doesn't even tell you that on chewys website or much anywhere so majority of people won't know that. I only know cuz Humblefish told me
Magnum® Polishing Internal Canister Filter | Marineland®
www.marineland.com
I wanted to try the reverse undergravel filter thing in my 80g but could not find one a footprint I needed.
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