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Unread 12/24/2011, 10:39 AM   #10
Randy Holmes-Farley
Reef Chemist
 
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Join Date: Apr 2001
Location: Arlington, Massachusetts
Posts: 86,233
I don't think we want to clog up a biopellet comparison thread with reasons to not use them, but these are mine:

1. Harder to quickly control and adjust dosing than soluble organics.
2. More tendency to potentially cause cyano than some soluble organics such as acetate.
3. More expensive and requires equipment purchases for use (although a doser for soluble organics also costs if you use one)
4. Not as easy to control where and when the dosing takes place in the overall reef system
5. The released organics are perhaps not as widely bioavailable to reef creatures as things like acetate or ethanol
6. Possibly more of a concern for hydrogen sulfide production during a power failure.


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Randy Holmes-Farley

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