Aqua Vitae Estimative index fertilizer daily dose- 500ml refill  (free shipping)

Aqua Vitae Estimative index fertilizer daily dose- 500ml refill (free shipping)

  • $12.99
We currently have 86 in stock.


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. 


Questions & Answers

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  • The instructions say dose 2mL per day, what is this based on? is that the same dosage for a 5g to a 120g tank? What is the mL per gallon dose?

    It's 2ml per 10 gallons.  Based on the Estimative Index dosing strategy. 

  • after mixing with water, how long will it take for the fertilizers to expire?

    there's no set expiration on this, it should last well over year.

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