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Old 10/15/2020, 04:37 AM   #1
tmccaffery
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Join Date: Apr 2011
Posts: 149
Cadmium and Aluminum?

I am trying to figure out what will cause Cadmium and Aluminum in tank?

Last test showed on June 16th 2020 showed Cadmium 1.16 g/l; Aluminum 4.60 g/l

now on October 15th shows Cadmium 3.20 g/l; Aluminum 1.59 g/l


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Old 10/19/2020, 01:52 PM   #2
Michael Hoaster
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Location: Boulder, CO
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I'm no chemist, but I believe GFO and/or other filtration media have aluminum in their ingredients. If you do run a medium with aluminum/cadmium, try taking it offline for awhile. Macro algae are effective at soaking up metals, so you might consider adding some to get those numbers down.


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