Thursday, December 15, 2016

Estimative Index (EI Dosing) Fertilizing Method: Why it is Necessary?

EI Dosing

The popular Estimative Index Fertilizing Method was first established by famous aquascaper Tom Barr. The basic idea behind this fertilizing method is to provide an excess amount of nutrients to your tank in a week. After the end of each week, you have to change half of the water to set the proper amount of nutrients back. This method ensures that there is enough nutrients in the water column for the plants to thrive. It also ensures that if there is any problem in the tank, it is not because of nutrient deficiency.



The advantage of this method is your plants will never face any lack of nutrients in the water column. Again, if you see any problem or unbalance in the water parameters, you can be sure that this is not due to nutrients. This method helps you by narrowing down the possible factors that can cause a problem in your planted tank. So, finding out the problem and taking care of it will be easy. If any problem arises, you’ll instantly know that it is due to either insufficient Co2 or lack of water circulation in the tank.

Dosing Methods for High Tech Planted Tank:


10 to 20 gallon tank:


=>Half teaspoon of MgSO4 * 7H20 three times a week
=>1/8th teaspoon of Potassium Nitrate (KNO3) once a week
=>1/32th teaspoon of KH2PO4 once a week
=>1/32th teaspoon of Tenso cocktail or CSM+B once a week
Make a 50% water change after each week.

20-40 gallon tank:

=>1/4th teaspoon of KNO3 three times a week
=>1/16th teaspoon of KH2PO4 three times a week
=>1/16th teaspoon of Tenso Cocktail or CSM+B three times a week
=>2/3rd teaspoon of MgSO4 * 7H2O three times a week
Make a 50% water change after each week.

40-60 gallon tank:

=>1/2  teaspoon of KNO3 three times a week
=>1/8th teaspoon of KH2PO4 three times a week
=>1/8th teaspoon of Tenso Cocktail or CSM+B three times a week
=>1 teaspoon of MgSO4 * 7H2O three times a week
Make a 50% water change after each week.


60-80 gallon tank:

=>3/4th teaspoon of KNO3 three times a week
=>1/4th teaspoon of KH2PO4 three times a week
=>1/4th teaspoon of Tenso Cocktail or CSM+B three times a week
=>1 and a 1/2 teaspoon of MgSO4 * 7H2O three times a week
Make a 50% water change after each week.

100-125 gallon tank:

=>1 and a 1/2 teaspoon of KNO3 three times a week
=>1/2 teaspoon of KH2PO4 three times a week
=>1/2 teaspoon of Tenso Cocktail or CSM+B three times a week
=>2 and 1/4th  teaspoon of MgSO4 * 7H2O three times a week

Make a 50% water change after each week.
You will not have to dose with this amount exactly to the letter. You can lower the amount if your tank is low tech or you have low light in your tank. If you want, you can also add some Potassium in your tank by dosing Potassium Sulfate, but it is not absolutely necessary.


The above mentioned fertilizers will add-


=>25 ppm Nitrate in your tank every week
=>20 ppm of Potassium every week
=>3 ppm of Phosphate every week
=>10 ppm of Magnesium every week
=>1/2 ppm of Iron each week

Don’t know what ppm is? Click here to read the article describing everything about ppm !

Why Estimative Index Fertilizing is an amazing method?


=>The plants will never face any nutrient deficiency.
=>There will always be nutrients available in the water column for the plants to thrive.
=>If you see any problem in the tank, you can be sure that it is not from nutrient deficiency. So, you can easily narrow down the problem and resolve it.



Comment below if you have any question and I’ll try to answer as soon as I can!


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