What medium is it your using? Soil? Soil less? Temps? rH? Lighting? Need just a bit more info, looks to actually be beginnings of nute burn and a ph lock out... Just a bit more info and I'm sure someone will come along with some more help...how far are the lights from the canopy? Just a couple questions to answer will give us enough info to steer you in the right direction.....
:Sharing One:
give them just water. it look's like nute burn from too much on the nute's. I would do 2 watering's with plain water then feed half or less of what you did last feed. do you supplement with cal/mag ? under an LED light you will need this.and your plant is flowering. don't worry about your English. it is 100% better than my Thai!![]()
Um my soil mix is 90 soil coco 5 perlite 5. this pot It my first grow I know I would have problem with the root. and I'm tested the ph is around 6.5-7.5 and I'm never test ph'd water I'm using RO water would It be worse? I'm afraid they would die and Now they turn brown on tip and get inward too! would it be on Phosphorus Deficiency ? because I also got red stem ? and I didn't give bloom fertz yet. or it a cal/mag defi ?Bingo! Typical stoner moment here and just saw your thread from the start, using coco eh? I think cal/mag def along with ph lock out, running coco ph should be 5.6 to 6.2 max, test your run off and see if you can figure out the ph of the coco... :karma Cloud: