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Re: Got balls? - or are they Duplacated

Thomas Barr asked, in part:

> I've wondered since folks seem to really enjoy jobes
> sticks, why someone or
> a company like SeaChem has not come out with a non
> greenwater producing (no
> NH4) substrate ball to add to their tanks. Use KNO3
> instead of NH4NO3 and
> urea. 

Weren't/aren't the Duplas something like that or are those
NO3 free?

Scott H.

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