Yes, just add it to your water as instructed on the bottle. (By the way...5ml = 1 teaspoon.)
Liquid Karma - Application Rates: Seed Germination 5 ml/gallon. Vegetative Growth 10-15 ml gallon. Flowering 10-15 ml gallon. Transplanting 15 ml gallon. Rooting 15-20 ml gallon.