new fan leaves comming out of buds shriviling and turning brown

[fogman]

What type of medium; soil or hydro? hydro
What brand and type of soil? clay balls, home made setup
Indoors or outdoors?indoors
What strain?white widow
How old are the plants?8 weeks
What type of lights and how many watts?400 watt hps
How far from the lights?4 inches
What is your watering frequency and source of water?fogger/ spray system
What, how much and when was it fed? NPK?fed 4 times for 15 minute with sprayers, fogger all day all night
What is the medium/runoff pH and PPM if in hydro?ph5-6, ppm-170
What are the temps and humidity in the room?25degree in room, humidity 0
What size pots?medium, 100mm diameter
Any bugs? Look real close.no
Any other pertinent info?oly started today the fan leaves on the crowns which are closest to the light look like there dieing or some shit, theres smaller buds about half way up which it is happening to aswell, can anyone help? im trying to keep them down from the light but they grow straight back into it the next day.

[mat369]

A lot of fan leaves during the time of flowering will shrivel up and die. Then drop off. This is because they are no longer needed by the plant, Its concentrating on flowering now. So will lose leaves which aren't important.

[TBuds]

Do u have a air cooled hood? 4" seems to close. I also run a 400wt and @ that distance the light would smokem before i would could be light burn? What kinda of growth u get with the Fogg?