Is Potassium not assimilated by plants ?

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

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.

Philippe Lemaire (remove oldies) wrote:
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


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.

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

Uzytkownik "Elaine T" napisal w wiadomosci
m...
Philippe Lemaire (remove oldies) wrote:
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


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.

I dont think so.
The level of K is too low in tmg and cannot be accumulated using tmg in
recomendet dose.
Do you monitor your level of K ?

Elaine T wrote:
Philippe Lemaire (remove oldies) wrote:
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


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
I change 1/7 of the water every week

My current concentration is about 55 mg/l
If K+ is assimilated by plants, is it the first ion to leave
when leaves decompose ?

Thanks again !

Philippe

Andrzej Konarski wrote:
Uzytkownik "Elaine T" napisal w wiadomosci
m...
Philippe Lemaire (remove oldies) wrote:
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


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.

I dont think so.
The level of K is too low in tmg and cannot be accumulated using tmg in
recomendet dose.
Do you monitor your level of K ?

Now I'm at about 55 mg/l of Potassium...
See other answer for more details !

Thanks !

Philippe

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


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.

I change 1/7 of the water every week

My current concentration is about 55 mg/l
If K+ is assimilated by plants, is it the first ion to leave
when leaves decompose ?

Thanks again !

Philippe

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

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

Elaine T wrote:
Philippe Lemaire (remove oldies) wrote:

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.

Thanks again !

Is there some description of the standard plant composition ?
When leaves die, does K first return to water ?

Philippe