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#31
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Adding nitrates without adding Ca, Mg or K
Richard Sexton wrote:
In article , Philippe Lemaire \(remove oldies\) wrote: Richard Sexton wrote: It shouldn't. Where were you ading potassium. If you chnage half he water once a week it'll take care of any imbalances although you may need ot make two 80% water changes to get rid of any current exess wastes (like too much K). If you think it doesnt come from the substrate, it shall come from the trace mix... There is literally only a trace of potassium in iron/trace mix. So lot of it was trapped in the substrate ?? Or is ProFito different ??? Philippe |
#32
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Adding nitrates without adding Ca, Mg or K
If you think it doesnt come from the substrate, it shall come from the
trace mix... There is literally only a trace of potassium in iron/trace mix. So lot of it was trapped in the substrate ?? Or is ProFito different ??? I assume ProFito is a substrate material? No substrate should leak potassium intothe water anything that would is far too unstable to be ever used in a fishtank. Okay, now say your tank holds 40 liters. You take out all the water that you can. About 30 liters. There's still 10L in the substrate. So, when you add more water all the crap in solution in the water in the substrate now comes back into the tank water, EVEN IF YOU REPLACED ALL OF IT. Now, if you have something in yout gravel that is leaking potassium into the water column that woiuld doit too. Did you ever use any plant fertilizer tabs in that gravel? -- Need Mercedes parts ? - http://parts.mbz.org Richard Sexton | Mercedes stuff: http://mbz.org 1970 280SE, 72 280SE | Home page: http://rs79.vrx.net 633CSi 250SE/C 300SD | http://aquaria.net http://killi.net |
#33
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Adding nitrates without adding Ca, Mg or K
Richard Sexton wrote:
If you think it doesnt come from the substrate, it shall come from the trace mix... There is literally only a trace of potassium in iron/trace mix. So lot of it was trapped in the substrate ?? Or is ProFito different ??? I assume ProFito is a substrate material? No substrate should leak potassium intothe water anything that would is far too unstable to be ever used in a fishtank. It is a liquid fertiliser... Okay, now say your tank holds 40 liters. You take out all the water that you can. About 30 liters. There's still 10L in the substrate. So after 2 years, even if the tank water was once with 2000 mg/l of potassium, the leakage shall be ended now... So, when you add more water all the crap in solution in the water in the substrate now comes back into the tank water, EVEN IF YOU REPLACED ALL OF IT. Now, if you have something in yout gravel that is leaking potassium into the water column that woiuld doit too. Did you ever use any plant fertilizer tabs in that gravel? I'm afraid yes :-( I'm back at 3 per week from 10 last year... Thanks for all ! Philippe |
#34
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Adding nitrates without adding Ca, Mg or K
too. Did you ever use any plant fertilizer tabs in that gravel?
I'm afraid yes :-( I'm back at 3 per week from 10 last year... Thanks for all ! Ah. That'll do it. You might want to remove as much of the gravel as you can and replace it with clean gravel. A diatom filter would be handy. -- Need Mercedes parts ? - http://parts.mbz.org Richard Sexton | Mercedes stuff: http://mbz.org 1970 280SE, 72 280SE | Home page: http://rs79.vrx.net 633CSi 250SE/C 300SD | http://aquaria.net http://killi.net |
#35
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Adding nitrates without adding Ca, Mg or K
Richard Sexton wrote:
too. Did you ever use any plant fertilizer tabs in that gravel? I'm afraid yes :-( I'm back at 3 per week from 10 last year... Thanks for all ! Ah. That'll do it. You might want to remove as much of the gravel as you can and replace it with clean gravel. A diatom filter would be handy. Going this way from now ! Philippe |
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