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I wonder why there is a 2X difference between these amounts?
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I arrived at my calculations by using the fertilater. I didn't use the first screen I used the one called Find percent solution of nutrient in water.
I started with KNO3 in a 100 gallon tank using 65 grams in a 500ml solution and plugged numbers in till I hit 10 mL of solution....etc
Left C when you did your calculations did you take into account that your dosing solution was exactly 1/2 the strength of the 500mL solution?
Kinda of the ass backwards way of doing it.
Edward
I am looking into getting a pH/EC/TDS test pen to do as you advised
I just have one more question. My water right now has next to no calcium in it (less than 10 ppm) should I be adding Calcium with Discus solution or just not worry about it? I have ADA Aquasoil, I know it wamentioned somewhere that certain substrates added Calcium.