U¿ytkownik "Philippe Lemaire (remove oldies)"
napisa³ w wiadomo¶ci
...
Then, it is merely a catalyst being in higher and higher concentration,
depending on water changes !?

Could anyone discuss this subject ?
The only K I add comes from TMG and little KH2PO4.
Nitrates come from Ca(NO3)2 and Mg(NO3)2...
P and N are stable from week to week but K is raising.

Thanks in advance !

Philippe


I think you nedd to add K in fresh water to reach 15 ppm K.
And if you will be add olnly to fresh warter to change you will be have
parmanent level of K.
Natyraly you can increase or decrease level of K.
I thing more is not nedd.