The 2Hr Aquarist APT e (Estimative Index) | Aquarium Plant Fertilizer
The 2Hr Aquarist APT e (Estimative Index) | Aquarium Plant Fertilizer
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With the 2HR Aquarist APT-EI, the famous nutrient dosing approach pioneered by Tom Barr is now available in a ready-to-use concentrate that removes the guesswork from trying to recreate this powerful and sometimes elusive formula.
- This modified estimative index formula is specifically calibrated for nutrient hungry ‘Dutch Style’
- Tanks with plants that prefer richer water column dosing in co2- rich environments.
- A concentrated ratio of macro NPK, micro and trace elements for deeper greens, richer reds and superior growth.
Dosing
Dose 5ml per 100L 3 times per week or 2ml per 100L daily.
EI aims to dose all nutrients in excess through heavily dousing the water column with nutrients. Levels are normalised at the end of each week with large (50%) water changes. The aim is to provide plants with non-limiting amounts of nutrients.
A weekly cumulative dose of nutrients according to EI would be around:
NO3 – up to 20 – 30ppm
PO4 – up to 5 – 7ppm
K – up to 20 – 30ppm
Fe/traces – up to 0.5 – 1ppm
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