I started with hydro stuff from stealth.
Anyway change your water now to R/O or distilled water. You will need some cal-mag or calmagic to put back the trace minerals you want. Start 1/4 strenth nutes. She's ready and needs nitrogen.
you really need a PH meter, get a cheap PH 600 for 20 bucks on ebay. a TDS meter will help to

the whole point is how much poisin in your tap waterand how much did you filter out. Start clean and add back only what you need. thing will work much better. and come to the hydro section. lol