Nute Math?

The numbers for nitrogen, phosphate, and potassium...are they ratios or are they set amounts or how exactly does it work.

Like if I was to add 2-0-3 and 5-5-5 (random numbers for example) would it equal 7-5-8 ??

thanks

harryhood said:

The numbers for nitrogen, phosphate, and potassium...are they ratios or are they set amounts or how exactly does it work.

Like if I was to add 2-0-3 and 5-5-5 (random numbers for example) would it equal 7-5-8 ??

thanks

Click to expand...

I think the way that the numbers work ie 20-20-20 is for when you use the max strength for the amount of water that they say to use the amount in. And if you add another nute and find out the numbers I think it does add up like that.

harryhood said:

The numbers for nitrogen, phosphate, and potassium...are they ratios or are they set amounts or how exactly does it work.

Like if I was to add 2-0-3 and 5-5-5 (random numbers for example) would it equal 7-5-8 ??

thanks

Click to expand...

it would work like that if they were the same concentration

The N-P-K numbers signify the ratio of the 3 macronutrients, but you control how much to add to a given volume of water. The actual numbers are the % (by weight) of each. For veg you want higher N, for flowering higher P. I'm going through some calculations now because I planted in MG soil (this is my first grow) and I need to add P and K for flowering. I'm working out the numbers for K2HPO4 to see how much to add to my water - anyone done this? No sense in re-creating the wheel!

Thanks for the response.

So if they are ratios then would 2:2:2 = 1:1:1 in percentage of each and overall amount of net nutrients or is the total amount of combined nutes greater in 2 than 1?
Wicked lit right now so I don't know I worded that question right.

2-2-2 and 1-1-1 have the same ratio, but 2-2-2 has twice as much of each. You could use twice as much 1-1-1 and get the same results as using 2-2-2.