nutrients

i have a question i bought some liquid karma,sweet berry,and a pro grow the other day from the hydro store and the guy said that these are all the nutrients i'm gonna need is he telling me right four:20

They only one you need is the pro grow. THe others are nice additives when used correctly. Sweet and karma at 5mls a gallon is great for soil.

I wouldn't trust anyone who said "this is all you will ever need." Different plants grow differently and need diferent nutes. Even the methods used by the grower can affect what nutes the plant needs. You'll have to try them and see how well the plants do.