Re: Nitrates vs. DOCs

[Mike & Diane Wise <apistowise@bewellnet.com>]

The only simple way (without laboratory analyses) that I know of is to put a
specific amount of dye (food coloring) into a tank and determine the time it take
the carbon to strip it out. Time fresh carbon first as a reference standard. Once
it takes the carbon 3 or 4 X the length of time of your reference it's time to
change it. Carbon is fairly inexpensive. Why not just change it on a weekly or
biweekly schedule?

Mike Wise

IDMiamiBob@aol.com wrote:

> The recent thread got me to thinking-  If DOcs are indeed a factor in growth
> rates, then carbon filtering should make a difference.  Has anyone on the
> list actually run a control-group comparison of growth rates with and without
> carbon filtering (in addition to regular water changes of course)?  Does
> anyone know of a way to monitor carbon to know when it is nearing the end of
> its useful life and is ready for replacement?
>
> Bob Dixon
>
> -------------------------------------------------------------------------
> This is the apistogramma mailing list, apisto@majordomo.pobox.com.
> For instructions on how to subscribe or unsubscribe or get help,
> email apisto-request@majordomo.pobox.com.
> Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!



-------------------------------------------------------------------------
This is the apistogramma mailing list, apisto@majordomo.pobox.com.
For instructions on how to subscribe or unsubscribe or get help,
email apisto-request@majordomo.pobox.com.
Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!