Nitrates - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 06-13-2012, 10:22 PM Thread Starter
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Nitrates

Yes,I know this has been discussed over and over.I would like to know if dosing dry ferts will increase Nitrates. I have never had a problem Nitrates before I starting dosing, nothing else has changed,Nitrates were always 10-15ppm,now 40-60ppm.
Dosing:3x week 1/4 tsp.KNO3
1/16 tsp.KH2PO4
3x week 3ml Trace
3ml Iron
3ml Excel
37 gallon
40% water change weekly
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post #2 of 7 (permalink) Old 06-13-2012, 10:50 PM
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You are dosing 5ppm nitrates when you dose you 1/4 teaspoon of kno3, so you are adding 15ppm weekly. Depending on your lighting, plant load and co2 you may or may not be using enough to keep them where you want them.

Standard 10 Gallon (20 x12x12).
Low tech, Sand substrate.
Eheim 2211, and Aqueon Quietflow 10.
Finnex Stingray LED, 20" above substrate
2 Anubias Nana Petite, Christmas moss.
4 Halequin Rasborahs, 5 RCS.
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post #3 of 7 (permalink) Old 06-13-2012, 10:52 PM
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Of course adding KNO3 will increase Nitrates - this is the intended result. You are adding too much however. Cut your KNO3 down because it is obvious (if your readings are acurate) that your plants are not using enough of what you are putting in. Estimative index is not an exact science; what works for one tank does not necessarily work on the other. It depends greatly on your plant load and what type of plants you have (amongst other things). Stem plants will chew through nitrates while an Anubias plant will not use nearly as much (as an example).
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post #4 of 7 (permalink) Old 06-13-2012, 11:25 PM Thread Starter
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Its always good to have someone confirm what I'm thinking. My plant load isn't that high as they have black spots that wont rub off and i've been trimming them back.I will reduce KNO3. I had LFS test water and they got same readings so at least thats accurate. I have amazon sword,melon sword,green sandy(3),anubias nana(2).
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post #5 of 7 (permalink) Old 06-13-2012, 11:25 PM
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Interesting, on your other thread it says 40%, bi-weekly water changes.

https://www.plantedtank.net/forums/ge...ml#post1894134

Also, Green Sandy's are not true aquatic plants, they will eventually die and pollute your tank.

Standard 10 Gallon (20 x12x12).
Low tech, Sand substrate.
Eheim 2211, and Aqueon Quietflow 10.
Finnex Stingray LED, 20" above substrate
2 Anubias Nana Petite, Christmas moss.
4 Halequin Rasborahs, 5 RCS.
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post #6 of 7 (permalink) Old 06-14-2012, 12:02 AM Thread Starter
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I have learned a valuable lesson and have gone back to 40% weekly water changes.There was a time when I was lazy and didn't change water often enough.No wonder my green sandys look like crap!! Did not know they weren't true aquatics. So much to learn for planted tanks.
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post #7 of 7 (permalink) Old 06-14-2012, 12:17 AM
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Thats good. Weekly water changes, (50% is usually recommended) are an important part of ei dosing.

Standard 10 Gallon (20 x12x12).
Low tech, Sand substrate.
Eheim 2211, and Aqueon Quietflow 10.
Finnex Stingray LED, 20" above substrate
2 Anubias Nana Petite, Christmas moss.
4 Halequin Rasborahs, 5 RCS.
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