this probably sound like a daft question, but i just wanted to make sure.

NPK is expressed as a percentage, and given that most if not all ferts need diluting... is that percentage the final % when the waters added?
like a 10-10-10 fert that says to add x ammount per litre of water,
that water will then be 10% nitrogen etc. ?


reason i ask is that i got some new fert today, 10-25-25,
if i put half the ammount in the reccomended water,
would that make it 5-12.5-12.5?
babystarbud Reviewed by babystarbud on . N-P-K question this probably sound like a daft question, but i just wanted to make sure. NPK is expressed as a percentage, and given that most if not all ferts need diluting... is that percentage the final % when the waters added? like a 10-10-10 fert that says to add x ammount per litre of water, that water will then be 10% nitrogen etc. ? reason i ask is that i got some new fert today, 10-25-25, if i put half the ammount in the reccomended water, would that make it 5-12.5-12.5? Rating: 5