Aqua Vitae Estimative Index (3 liter bottle combo)- Free Shipping

Aqua Vitae Estimative Index (3 liter bottle combo)- Free Shipping

  • $39.99
We currently have 85 in stock.


You will receive 3 macro and 3 micro packages. Mix each package in a 500ml container. Shake well.  It may take a day to completely dissolve. 

The Estimative Index Method. The Estimative Index (EI) coined by Tom Barr is a straightforward method for providing nutrients for a planted tank. The idea behind EI is simply introducing an excess amount of nutrients within an aquarium, throughout the week. This excess of nutrients floods the water column and feeds the plants. This is an estimative method; measuring specific nutrient uptake rates is not necessary and no test kits are involved. EI provides a surplus of nutrients that helps to prevents plant deficiencies, and allows plant growth to out compete algae growth. 


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  • Is it 3 macro and 3 micro packs into 500ml of water each, or one of the 3 packs individually into 500ml?

    one of the 3 packs individually into 500ml

  • Just to clarify dosing instructions for the estimative index fertilizer dose. It’s 2 ml per 10 gal 3 times a week and a 50% water change per week. Is this correct. Thanks. I will dose for 65 gal daily so I came up with 5.5 ml per day of both macro and micro. Does this sound correct? Thanks

    Yes that's right.

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