I was wondering about nute strengths and how much they raise the PPM, since i cant test it. If the bottle says 5-5-5 on it, and has a reccomended usage on it. Does that mean that for every gram you put you can calculate how much PPMS are added ? I need to know because one bottle says to add 30ml to make 5 liters and the other one says 60 ml for 5 liters and i needa know abit more on what im giving my plants!