I hav some seedsman ww that are two mos old reecently I'm having problems some of the fan leaves are geting brown spots falling of as0 well as the lower shoots are dying turning brown at leaf tips I don't no if its overfert, lighting,pest or deficency or a combination I'm growing in hydro using flood table I feed for 30 min 3 times a day using all botanicare products grow, karma,calmag ang last 2 cycles sweet help is greatly appreciated trying to figure out how to upload photos in veg cycle