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