first time hydro grow

i am new to growin hydro and wanted opinions and info on everything. i decided i'm gonna go dwc bubbleponic. i have a rubbermaid container, 3.75 net pots, hydroton, rockwool, air pump, air stones, and a light. what else do i need besides the nutes. and as far as nutes go which ones are good and still affordable?
let me kno what youve got about growin dwc so i can get this started

ph meter, ph drops up/ down ppm meter..need both of these for sure no if ands or buts..get fox farm hydro nutes, general hydroponics nutes..there are all sorts..that arent to expensive

alright thanks. what should the ph be at and should it change through the lifecycle of the plant