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Does anyone have any experience using these bio beads. Got this from my friend's grandfather's aquarium kit.

API manufactured it, but now it's discontinued product & there's NO info at all on this stuff.




  • Wondering if this can be used/recharged like purigen?
 

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Looks to me like it's a type of biomedia like Matrix, Ehfi-whatever and such which would mean they're not an adsorptive media like Purigen.
 
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