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Originally Posted by nasfish
KNO3 solution made by mixing 100g KNO3 into 500ml water.
Dose 18ml into my 220 liters tank to add 10ppm NO3 per dose. Dose 3 times a week.
PO4 solution made by mixing 100g KH2PO4 into 500ml water.
Dose 3ml into my 220 liters tank to add 2ppm PO4 per dose. Dose 3 times a week.
K from both dose is approx 7.2 ppm K.
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I would dose 5 ppm NO3 and 1 ppm PO4 daily instead of three times a week. Maybe a double/triple dose after the 50% water change.