colliefish... hi : )

ppm = parts per million of total nutrients including N P K ie 20-10-20 etc...
So, it tells you the total amount of ferts but not a detailed break down... of N P K etc.

A very simple RATIO mixture of General Hydroponics mixtures is as follows

Vegatative stage 3micro 1grow .5 bloom ratio

Flowering/budding stage 1micro 0grow 1 bloom ratio

you will purchase this product in 3 different bottles (MICRO, GROW, BLOM)... DON'T mix the nutrients in a cup together without water...they have to be mixed in water... keeping adding this ratio to your resivore until you reach the desired PPM..

this is a very effective simple mixture that grows HUGE plants : )