Right got my chemicals...

KNO3 and K2SO4 to start with - am going to dose with KNO3 first to see what
the effects are...This will put more K in the tank than I guess I have at
the moment. If successful then in goes the K2SO4 to make up the difference
in K.

I will be aiming for about 12ppm Nitrate. The nitrate level I want will give
me 8 ppm of K in the tank.

I will also be aiming for about 20ppm K. So when I dose with K2SO4 I will be
adding a further 12ppm of K which leaves me with 15ppm of introduced SO4.

So, what's the effect that SO4 has on the plants or fish?

This is as much fun as I had last night at the local Curry house.
Martin


"Martin" wrote in message
...
Paul,
I was under the impression that, as I have 100% flourite as the substrate,
then this already has all the iron and trace elements that I may need - it
is fractured clay. I believe the chemistry is OK for trace elements.

Martin

PS. I am actually getting laboratory grade KNO3 and K2SO4 now as I don't
(100%) trust the gardening stuff not to have some nasty trace elements in
it
(like pesticides) (it won't go to waste though).