autoflowering hydro nutes and ppm

Im on my*first grow*doing a hydro system with some*autoflowering*seeds. At which point should I start adding nutes and in what amounts? What should my ppm be? Do I just do grow nutes or bloom or both? How often should I change my water? Also what are typically the stages and in weeks of*autoflowering? Sorry for all the newb questions. Everyone here seems pretty educated so I rather get answer directed towards what im trying to accomplish versus reading answers on other people's situation. Thanks in again!

i used dyna grow and bloom..easy to use ..i used the grow until the plant started changen..then switched to bloom..you only have to use the grow for a few weeks..jsut follow your nute instructions well and should be cool

ph around 5.6 to 5.9
ppm around 400 early on
800 early bloom
1000 or more for full bloom
keep your PH and nutes correct, the ppm should always be fine..from my experience
good luck