Lowering mitrates - The Planted Tank Forum
 
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post #1 of 12 (permalink) Old 03-18-2005, 06:03 PM Thread Starter
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Lowering mitrates

Hi all,
I just tested my nitrates and they are very high around 15ppm maybe a little more. I know that rolata indicas prefer low nitrates to get a good pink in them, but what about the R. Stellata? I have been dosing 1/2tsp three times weekly, how would my tank react to me not dosing as much? I do water changes three times a week, so what if I skip the nitrate dosing and see how things react. I get about a 10ppm maybe lower when I dont dose because of my bio-load. I just got my new lighting 4.7 WPG last week so Im doing everything I can to bring out the red and pink in my plants. Thanks for the great help!
Pete
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post #2 of 12 (permalink) Old 03-18-2005, 06:58 PM
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Welcome to the high bioload tank club! hehe
NO3 15ppm is not real high, but if you really want to keep it lower, you can reduce NO3 dosing to 1/4 tsp, if still high, stop it altogether. Remember to replace KNO3 with K2SO4 though, or you will run into K+ deficiency.


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post #3 of 12 (permalink) Old 03-18-2005, 09:32 PM
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with 4.7wpg 15/20ppm is perfect, 30 would be ok also..

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post #4 of 12 (permalink) Old 03-19-2005, 04:50 AM Thread Starter
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Will the high nitrates have a negative effect on the pink in plants, or the high light kinda counters it? I dont want to stop it all together, maybe take shalu advise and lower it down to 1/4tsp.
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post #5 of 12 (permalink) Old 03-19-2005, 11:38 AM
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I haven't added any in a month or two. Bio load and tap water are my only NO3 contributors lately. Just adding K as Shalu stated. It's worked. Now it's time to remove the bio load a bit and see where that takes me.

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post #6 of 12 (permalink) Old 03-27-2005, 02:59 PM
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Quote:
Originally Posted by shalu
Remember to replace KNO3 with K2SO4 though, or you will run into K+ deficiency.
My nitrates have been too high lately. Seems like when I was constantly testing, all I ever showed was 10. So I start running low on test solution and decide I'm okay. Then I test last Thursday, the day before w/c, and nitrate is very high. W/C on Friday, but Saturday still shows nitrate of 20. I got scared and did a quick 25% w/c.

I do not own any K2SO4.

I do dose KH2PO4 and K+. If I skip dosing nitrate for a while, will I be okay just dosing these two?

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post #7 of 12 (permalink) Old 03-27-2005, 09:43 PM
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Quote:
Originally Posted by Barbels
I do dose KH2PO4 and K+. If I skip dosing nitrate for a while, will I be okay just dosing these two?
K+ from KH2PO4 is very little. If you have another source for K+(like Seachem potassium, though it gets expensive for large tanks), then you don't need separate K2SO4(it is just a cheap source of K+ without adding NO3). Just increase dosage of whatever your K+ source while skipping KNO3.


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post #8 of 12 (permalink) Old 03-27-2005, 11:13 PM
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What about my K+ ? Would that not be enough? Should I go ahead and increase it or might I get into trouble if I do that?

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post #9 of 12 (permalink) Old 03-28-2005, 03:48 AM Thread Starter
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I changed my dosing on the K2SO4, now Im dosing dry 1 1/2 tsp into my tank to get a reading of 21.38 according to chucks page. With this can I stop my nitrate dosing and be ok? Or should I add more K2SO4? My Discus are killing me on the nitrates !
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post #10 of 12 (permalink) Old 03-28-2005, 08:06 AM
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Pete, you should be fine.

Barbels, don't understand your K+, you mean you have a separate supplement called "K+"? Just use common sense, if you reduce K from one source(KNO3), just increase it from another source(whatever you call your K+).


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post #11 of 12 (permalink) Old 03-29-2005, 02:38 AM
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Quote:
Originally Posted by shalu
Just use common sense, if you reduce K from one source(KNO3), just increase it from another source(whatever you call your K+).
What I call my K+ is Potassium Sulphate. I got the K+ from the chart I got from WolfenexXx. Okay? If I would have paid closer attention to my GW bag before posting my questions, I would have better understood that.
I am using common sense. That is why I ask a bunch of questions before hastily moving into something I don't yet fully understand.

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post #12 of 12 (permalink) Old 03-29-2005, 02:46 AM
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Quote:
Originally Posted by Barbels
What I call my K+ is Potassium Sulphate. I got the K+ from the chart I got from WolfenexXx. Okay? If I would have paid closer attention to my GW bag before posting my questions, I would have better understood that.
I am using common sense. That is why I ask a bunch of questions before hastily moving into something I don't yet fully understand.
Well then, Potassium Sulphate IS K2SO4!


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---------------------
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