Dude... get something light DynaGro ... allyou need is Dynagrow Grow & Protekt for the veg state, then get DynaGro Bloom for flowering.
5mls per gallon of Grow per gallon and 2-3mls of Protekt for full strength, so dial it down in the beginning
5mls per gallon of Bloom and 3mls of Protekt for flowering.
1 Liter of Grow & bloom is $20 each and will last a LONG time, protekt same size is like $30 but will last as long if not longer than both the grow & bloom bottles.