I've been struggling for 3 weeks... :(

[bongmarley7]

These plants vegged for 12 weeks, LST method, planted in subcools super soil. I am beginning the third week of flowering and have been having pretty bad yellowing...I supplement Calmag. When the yellowing began I felt that they were hungry so I Have fed them twice now with Buddha bloom, superthrive(only once), and a little big swell to induce flowering....the yellowing still progresses. Some leaves are completely yellow and some are light light green....Im about to water soon. Thinking I'll just water straight PH(6.5) RO water. Oh yes and my run off has been steady 6.5

 

[bongmarley7]

More pictures

 

[DrKingGreen]

I've got some that look like that on mine at 6 weeks flower I think they started showing at around 3... Not nearly as many though. I bumped up the N for a feeding once because I thought it may be the cause. Not 100% sure though. So late in flower now there are some just turning and falling off the bottom anyway.

 

[ProfessorPotSnob]

Welcome to the chase , its common to chase a deficiency as you are with Nitrogen when growing with super soil and other organics .. How long was this soil aged ? Might want to really give it a good dose of Nitrogen before it really becomes a mess as well as some cal-mag ..

Also make sure to watch the pH , from my experience super soil goes sour fast if you don't amend with enough lime

 

[bongmarley7]

i did follow the exact recipe to a T, i have lime if maybe i should i top feed with it? i fed them nutrients last week. think its safe to give them full strength Buddha bloom with some calmag?! aiyiyi! got me stressed! but its only the two fireheadbands, the Og kush and pre98 bubba are lusciously green!!!

 

[DrKingGreen]

i did follow the exact recipe to a T, i have lime if maybe i should i top feed with it? i fed them nutrients last week. think its safe to give them full strength Buddha bloom with some calmag?! aiyiyi! got me stressed! but its only the two fireheadbands, the Og kush and pre98 bubba are lusciously green!!!

I just used my veg nutes (20-20-20) for a feeding since my flower nutes are 10-30-20 (I think). Post up a pic of your OG! I've got a Purple OG K goin as well. She's pretty huge and looking tastey. Check her out in the link on my sig if you get a chance!

 

[bongmarley7]

Here is the Og Kush which is doing great

 

[sine143]

i would have immediatly toppdressed with mad EWC, and supplemented cal mag. sounds like ph isnt an issue.

 

[AimAim]

I know nothing about fire headband but I am guessing they don't like something in your setup that the other strains don't mind. Looks like N deficiency but it could be a lot of things. If it were me I'd flush the pots with 2-3X volume good clean water then as soon as they drain out (hr or so) I'd water to runout w/1/4 strength nutes and your cal mag.

Could just be a strain or phenotype that wants to give up early.


Good luck.