PPM and feeding times

[orangejuice]

How many times should I start feeding for two dozen under two 1000W HPS, and whats a good PPM for transition to flowering phase which started one week ago.

[olives1]

How many times should I start feeding for two dozen under two 1000W HPS, and whats a good PPM for transition to flowering phase which started one week ago. Only feed once a week and make sure to empty rez weekly and refresh with new nutes i like 400ppm for transition and work up weekly to about 800-900ppm

[orangejuice]

Are u sure only once a week? I have been flooding and draining 30 mins total everyday. Let me know what you think.