How to prepare nutrient solution for my hydroponic plants

hi every one , just now started my experiment with hydroponics, have planted seeds and the sleedng are coming out in few days wwill shift those plants in to hyroponic sysytem my question is how to prepare nutient solution for my hydroponics please help me with the composition and the type of chemicals to be used ,is nitrogen, phosporous and pottasium mixed in water is enough or should i go for other chemicals nd mixing proposions,thnk q , please help me . thank q .