what's the proper NPK in grams for my soil?


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I really hope im posting this in the right place.. Sorry if its not. Well here it goes!
I just bought 20L of multi purpose potting mix to grow some cayenne peppers indoor. After calculating how many grams per liter this is I just wanted to know is this enough? Or will I need to refirtilize at some point (N 0.192, P2O5 0.219, K2O 0.384 g/L) maybe I'm doing this wrong because this seems very little... I'm new to this.
If this isn't good potting mix is there a way to tweak it?

Original values as written on the bag:
N = 192 g/m3
P2O5 = 219 g/m3
K2O = 384 g/m3

My ratio calculation 0.1 : 0.1 : 0.2 %

Thanks!
 
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You'll probably find that you have enough fertiliser in your compost to grow your plant to maturity,
When it starts to fruit, feed it a little tomato food every week.
That should do it.

Welcome to the forum.
 
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Sounds OK as for as soil and plant food. Cayennes require a LOT of direct sunlight to perform well. Indoors I can't say. Last year I grew 12 of them, strung all of the ripe peppers on a string and when all dried out and put into a food processor I ended up with 3 of the 3.5 oz containers that spices come in. Great for chili and pizza
 

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