hi i have a ebb and flow system with 1000w hps and 6 inch rockwool cubes. the problem is that most of my plant are drooping but only at the very top. i changed the ph to 6.0 i added a stronger solution of nutes and that didnt work. the only thing i can think that it might be is over watering or a nute deficiency. my watering cycle is 3 times in 18hours. it takes 3 min for the tray to fill and about 5 min for the tray to drain. sorry i dont have any pics. if any one might kow what is going on because i dont know how much more they can take.