trainwreck ph and ec

does anybody hav any recomended ph and ec levels for all stages of growth from seed 2 harvest using hydroponics.

pH is best at 5.7 - 6.3. Although with some chelated nutes it can range higher. EC is tougher. Best to follow your nute makers feeding schedule, check the ppm/ec when you change the res. I hardly use a tds meter at all anymore. I really think the key is getting the right nute product.

ok thanks 4 that. im guna b using ghe flora series 3 part system...