Philippe Lemaire (remove oldies) wrote:
Andrzej Konarski wrote:

U¿ytkownik "Philippe Lemaire (remove oldies)"
napisa³ w wiadomo¶ci
...

Elaine T wrote:


K is most certainly assimilated by plants. Perhaps your tapwater is
relatively high in K and the additional K from the TMG is too high of a
dose.

Thanks to both !

My tap water should be 0.64 mg/l
I add with KH2PO4 about 3 mg/l per week

Add kh2po4 only to fresh water to reach 1-1,5 ppm in water to change .
if you need more PO4 add some fish and do not add kh2po4 daily because K is
cumulating as you write.



Thanks !

So no K enters in plants structure !?

Philippe


Again, potassium (K) IS assimilated by plants. It enters the stucture
of the plants, if that's how you want to say it. Are you sure of your
test results? Perhaps something else is accumulating in the water and
making your K test inaccurate.

--
Elaine T __
http://eethomp.com/fish.html '__
rec.aquaria.* FAQ http://faq.thekrib.com