Need help fast, budding girls are sick

So these have been giving me problems since the beginning. I first thought it was mag def so I added extra micro but no change. The setup is drain and fill, 4x a day it fills for 2 minutes time. I am using micro and bloom under a 250 hps for the 2 plants. The leafs are starting to dry at the tips and also curl up at tips. The leafs look as though they are folding under and brown spots are appearing. The light is about 2 and half feet away and the temp stays around 76-78 degrees. I was thinking about just running clean water now since they are almost completed. The one has the hairs turning red but the other still has a lot of white hairs. Anyone ideas?

oh yeah the ph is about 5.5 and never goes really higher or lower

Damn bro i had the same exact problem with my last two grows man watch i will post a pic in a bit but this new grow i got going on is far way better

Not sure on the curling. But the browning looks like nute burn like ghetto said.

What strength do you run your nutes? i run 1/4-1/2 strength.

heres the same problem i had on my recent grow thank GOD my new grows not having the same issues

Nutri is running at 1/4 strength. And if anything can get worse I just noticed that the one plant is turning hermy completely if not male. The second plant half way up looks good but the bottom is starting to turn hermy. Should I flush it or just cut it so no more seeds develop? I swear I have tried 5 times and this time was the only time I got females and now it looks like this time didnt work out either.

the same thing happend to me. at first i thought it was mag def. so i added micro but nothing happend so i flushed but sitll nothing happend and it just got worse and worse till it died.

I am a soil man but use an aero cloner for babies. I have my sprayers on for 15 mins on then 45 off. Now I know it's not flood and drain but seems like a long time (6 HRS) for them roots to go without water. Also are you folair spraying with the ights on, looks like some burning going on there. That's my 2p worth but take with a pinch of salt as hydro is not my thing.