EI dosing info needed - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 03-04-2016, 10:17 PM Thread Starter
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EI dosing info needed

Hello all

I just received me EI dry ferts package from NilocG today and I need some help. This will be for a 40 breeder that I am setting up in the next few weeks.

From what I gather this will be my dosing regiment.
20-40 Gallon Aquariums
+/- tsp KN03 3x a week
+/- 1/16 tsp KH2P04 3x a week
+/- 1/16 tsp (5ml) Trace Elements 3x a week
50% weekly water change

With my package I also got K2SO4 which I'm not sure if I need to incorporate into the schedule. Also does it matter whether I use measuring teaspoons or a scale? Is one better than the other?

Just a noob


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post #2 of 9 (permalink) Old 03-04-2016, 10:31 PM
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K2SO4 is potassium in the form of potassium sulfate, you may or may not need it because the N and P provides some as well. personally I think it's a good idea, K is virtually impossible to dose too much. You should add roughly as much as KNO3, or a bit less.

Personally I like scales because you can do a better job of dosing specific ppms of everything, also easier to make precise adjustments. But it really doesnt matter, generally speaking there's no need to get all that specific to begin with.


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post #3 of 9 (permalink) Old 03-04-2016, 10:39 PM Thread Starter
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I forgot a couple other questions. Should I be dosing before the lights come on? Also I would assume I should turn my filter off when dosing but for how long?

Just a noob


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post #4 of 9 (permalink) Old 03-04-2016, 10:47 PM
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Around the start of the photo period is what most people do, hour or two before. Its nothing critical, best to do it around the same time every day for the most part. There's no need to turn the filter off.


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post #5 of 9 (permalink) Old 03-05-2016, 12:04 AM
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I agree with what burr said. Pm me if you have any other questions.
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post #6 of 9 (permalink) Old 03-05-2016, 12:10 AM
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I have a 40b i dose 1/4 t potassium nitate, 1/4 potassium sulfate and 1/16 mono phosphate. For trace i did 24g in 500ml of csm+b and dose 3ml.

I think that is the trace mix ill have to check. More lean on traces worked better for me.
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post #7 of 9 (permalink) Old 03-05-2016, 12:13 AM
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Quote:
Originally Posted by burr740 View Post
K2SO4 is potassium in the form of potassium sulfate, you may or may not need it because the N and P provides some as well. personally I think it's a good idea, K is virtually impossible to dose too much. You should add roughly as much as KNO3, or a bit less.

Personally I like scales because you can do a better job of dosing specific ppms of everything, also easier to make precise adjustments. But it really doesnt matter, generally speaking there's no need to get all that specific to begin with.
I can confirm that you don't need to dose K2SO4 as part of the regular fertilization. I would dose a one time of 5-10 ppm K and let the KNO3 and KH2PO4 provide the additional K in the tank.

I noticed in all my tanks that the K levels tend to increase over time even if the N or P is going lower. So most of the time you end up with the higher K than what you started with.


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post #8 of 9 (permalink) Old 03-05-2016, 12:18 AM
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If you are adding fish food, then the fish food can supply some N and P and most traces.
Fish food is low in K and Fe.

Start dosing the EI recipe.
If the NO3 rises too high, then you might use less KNO3, but substitute some K2SO4. This will supply the potassium without quite so much NO3.
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post #9 of 9 (permalink) Old 03-05-2016, 12:56 AM Thread Starter
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Cool, thanks for all the info. I'm sure this will be a learning experience and I will have some more questions later.

Just a noob


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