On Thu, 09 Jun 2005 16:52:38 GMT, Elaine T
wrote:

Free nitrates vs root tabs really depends on the plant and substrate.
KNO3 works VERY well for stem plants and floating plants. Swords and
crypts prefer substrate fertilization.

I'm curious as to whether it is a good idea under any circumstances
whatsoever to add nitrate to an aquarium stocked with fish. Nitrate is
the stuff we're trying to dilute out of there by changing water. I
would think it isn't a good idea to start adding the stuff on purpose.
(?)

-Derek