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Old 12-19-2004, 12:03 PM   #11 (permalink)
 
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The Magnum 350 is the only cannister I know of that can take DE on its micron cartridge. You can add it to the inlet with the filter running. However, in tests I conducted, the DE-coated Magnum clogged up in a couple of minutes with GWA. It is not powerful enough to be practical.
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Old 12-20-2004, 01:54 AM   #12 (permalink)
 
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<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR> However, in tests I conducted, the DE-coated Magnum clogged up in a couple of minutes with GWA. It is not powerful enough to be practical. <HR></BLOCKQUOTE>


thats funny, I've been using 330's and 350's for 20 years now and have never had them stop up in a couple of minutes. It usually takes a day or 2 before the flow is really affected much.
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Old 12-20-2004, 06:57 AM   #13 (permalink)
 
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Did you have a GWA problem? Yes, it will run for days with clean water, but the GWA rapidly clogs the DE. There is no way to bump the filter either, although I suppose you could let some water out of the cannister and shake it.

Anyway, that was the result of my tests. The GWA clogged the Magnum 350 in a few minutes. We're talking real pea soup here. I couldn't see the back of the tank. I used a UV sterilizer to get rid of it. That did work, and it did not come back.
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