KNO3 Dosing vs. Seachem Nitogen Dosing - The Planted Tank Forum
 
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post #1 of 14 (permalink) Old 01-16-2009, 10:20 PM Thread Starter
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KNO3 Dosing vs. Seachem Nitogen Dosing

My nitrates are always 0ppm. I think this is the cause of my BGA. So should I use KNO3 or Seachem Nitrogen? I heard that dosing nitrogen is another way instead of using KNO3. Seachem nitrogen is is easier to get for me. If I always have 0ppm then is this stunting my plant growth?
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post #2 of 14 (permalink) Old 01-16-2009, 10:39 PM
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Seachem's F. Nitrogen contains potassium nitrate and ammonium.
http://www.seachem.com/Products/prod...hNitrogen.html

More info: http://www.aquaticplantcentral.com/f...tor-chart.html

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post #3 of 14 (permalink) Old 01-16-2009, 10:43 PM
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You can get KNO3 as stump remover at home improvement centers. I use Spectracide brand, it's $4 per pound at Lowes.

Seachem Nitrogen is a blend of KNO3 & ammonium. Like KNO3 it also serves as a source of nitrogen, though a portion is in a different form. It has a significant price penalty as compared to dry KNO3.

You should never allow nitrates to zero in a planted tank, but simply upping your nitrogen levels may not give you the results you're looking for. The best results come when you have a comprehensive plan.

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post #4 of 14 (permalink) Old 01-16-2009, 11:15 PM Thread Starter
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I'm only dosing flourish now. I think nitrate is essential though
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post #5 of 14 (permalink) Old 08-23-2010, 11:50 PM
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I'm in a similar situation to Honorable24 where BGA is taking over my tanks because my nitrates are at 0. I just received my KNO3 from aquariumfertilizer and I am curious what a good dose amount would be on a weekly basis?
(the KNO3 I received is in powdered form)

BTW,
I'm planning on doing total blackouts on my tanks and dosing with KNO3.
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post #6 of 14 (permalink) Old 08-24-2010, 12:51 AM
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Have you taken a look at the Estimative Index (EI) method of dosing? It will detail how much of each chemical you should be dosing (yes, there are more macronutrients to dose aside from nitrates).

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post #7 of 14 (permalink) Old 08-24-2010, 02:19 AM
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post #8 of 14 (permalink) Old 08-24-2010, 05:40 AM
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Ok, so I've looked at some dosing regime's. Looks like I would need about 1/4 tsp of kno3 for my 48 gallon tank. However, I've been wondering if it's necessary to premix the kno3 with RO or distilled water then mix into the tank or do I just add the kno3 straight to the tank water? I'd prefer to start slowly dosing my tanks versus adding the maximum amount of fertilizers to my water and mixing the powder with water.

Also, doesn't kno3 burn your skin on contact?

I've got some Flourish Excel I was planning on starting for my tanks. I'm foregoing something like Flourish trace since I use eco complete in all my tanks. But is this even a good idea?
I could order more seachem products if i know exactly what I need.

I'm really looking forward to getting rid of the BGA in my tanks!
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post #9 of 14 (permalink) Old 08-24-2010, 06:26 AM
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Most people mix the KNO3 with any small amount of water (just so that it dissolves) and then dump it into the tank. I know of several people that just dose the dry powder directly as is, and that seems fine too.

I personally prefer to dissolve (say) 50 doses into a known volume of water, and then dose x mLs per day.

Potassium nitrate will not burn your skin on contact. It may irritate it a little, however.

You will need some kind of micronutrients (which Flourish Trace would provide). You can also use other products such as CSM+B, which will be much cheaper in the long run.

Anthony


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post #10 of 14 (permalink) Old 08-24-2010, 03:45 PM
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You need to dose phosphates too, KH2PO4, or the plants won't grow much with just nitrates.

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post #11 of 14 (permalink) Old 08-24-2010, 06:33 PM
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Alright, so it sounds like I need to order more ferts from aquariumfertilizer.
I see I could've just gotten some PMDD pre mix and taken care of everything I'm buying. Oh well.

So a good dosing regime would be KNO3, K2SO4, and CSM+B?
Also I see the CSM+B has a small amount of copper and 7% Iron content. Will that harm dwarf shrimp like Ghost and RCS?


BTW thanks for all the help with my noob-ish questions!
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post #12 of 14 (permalink) Old 08-24-2010, 08:32 PM
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It is actually better to buy the chemicals separately, rather than getting the PMDD mix. This way, you have greater customizability in the future.

As for your dosing regime, you will also need KH2PO4 in addition to the three that you have already listed.

The small amount of copper in CSM+B will not harm dwarf shrimp, as I dose it (EI style) all the time.

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post #13 of 14 (permalink) Old 08-25-2010, 02:04 AM
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Awesome!

So it turns out greenleafaquariums has CSM+B, KH2PO4, and K2SO4 cheaper than aquariumfertilizer. I shall place my order for all 3 tomorrow.

Is there anything different I should do when proportioning the amounts in a 5 or 1.5 gallon tank? I know I'd divide a 20 gallon dose by 4 to get my 5 gallon amount, but does a small tank like 1.5 gallons change the equation? (I would have 1/20th the dosing of a 20 gallon tank is what I'm saying)
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post #14 of 14 (permalink) Old 08-25-2010, 02:41 AM
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I found a local hydroponics store sells NPK very cheaply. so far 3 x 500g of NPK dry ferts has lasted over 6 months and will likely last a year. all 3 where $15 cdn total!!. can't beat that price.


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