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making your own black water extract


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#21 gerald

gerald
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  • Wake Forest, North Carolina

Posted 08 November 2017 - 01:42 PM

Yes I think the DOC leached from wood, bark, or leaves is probably helpful to blackwater-adapted fish, especially in soft water, but maybe in harder water too.  Neither  E. chaetodon nor F. lineolatus really needs soft acidic water; moderate hardness and neutral pH should be fine.  Wild populations are most often found in acidic water, but i think that's due more to competition rather than physiological need.


Gerald Pottern
-----------------------
Hangin' on the Neuse
"Taxonomy is the diaper used to organize the mess of evolution into discrete packages" - M.Sandel


#22 mattknepley

mattknepley
  • NANFA Member
  • Smack-dab between the Savannah and the Saluda.

Posted 08 November 2017 - 05:12 PM

Thanks, Gerald. What competition are you referring to? Are the BBS and Lined Topminnows the "winners" or "losers" for being there?
Matt Knepley
"No thanks, a third of a gopher would merely arouse my appetite..."

#23 gerald

gerald
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  • Wake Forest, North Carolina

Posted 09 November 2017 - 12:38 PM

I meant competition with other fish that are not quite as well soft-acid-adapted, like most Lepomis, minnows, and other Fundulus.   BBS and lineolatus can compete and win against (or at least co-exist with) those species in soft-acid water (low ions & low food supply), but not in harder, higher-pH waters where other species have greater advantage ... my speculation.


Gerald Pottern
-----------------------
Hangin' on the Neuse
"Taxonomy is the diaper used to organize the mess of evolution into discrete packages" - M.Sandel


#24 ChiefBrody

ChiefBrody
  • NANFA Guest

Posted 30 November 2017 - 10:59 AM

Oak leaves52319bc35a8f1b2a73e14f58769e7ed9.jpg

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