Weak Stems/Fan Leaves Yellowing and Dying week 6 flowering

Hello all having some issues with weak stems fan leaves yellowing and dying on a christmas OG kush strain. I have 3 250 CFL bulbs one 2600k, and 2 5500k. I'm growing in growstone GS-3 premade coco coir. I have one intake pc fan and one exhaust fan and a small oscilating fan as well. been feeding flora trio series with cal mag, and been using silica, and unsulphered molasses the past 3 or 4 weeks. Always PH my water and feeds to around 5.8-5.9 and alternate every other day feeding/watering.

I have read that fan leaves do typically yellow late stages of flowering, but these are curling up pretty bad. It's only effecting about 4 of the fan leaves. the top ones seem ok, but there was some light burn and a few leaves got caught in my exhaust fan by accident. I have to take her out for watering because she almost outgrew my grow box! I did supercrop just in time I think. my ppm's have been pretty low around 700-900 or so. shes only about 2 1/2-3 feet tall now.

Also buds look really small can I expect them to get any bigger? the main cola on top is decent, but none of the others are connecting and look kinda small. I'm also not sure when to flush. I'm thinking maybe 3 more weeks? I've read about the pistils changing colors to 50% and checking trichomes, but for me its hard to tell as this is my first grow. Some pistils are reddish/orange but still alot of white ones left. Any insight would help me out alot.. Just want a good yield. On the brightside she smells amazing. like a berry blend or something.


This image below is from about 2 or 3 weeks ago. everything seemed healthy and green other than the burn tips of leaves and ones caught in fans. Also weak stems still which has been a problem this whole time, but may be genetic not sure. The branches look weak but have been holding up so far, but buds are small.



I also have a grow Journal of my first grow in my sig if more info needed. Thanks

anyone?

Sorry, your photos are too small for me to see. When I click on them it takes me to another website. Silica can be a nice addition when you have weak stems. It is possible to keep your fan leaves pretty and healthy and green all through flower if you perfectly match the plants nutritional needs with your feeds. Maybe try to load your photos in a format where they can be seen up close. Good luck!

at this stage, you just want to put some stakes, crossbeams and ties to give it support, too late to change anything. next time build up the plants tolerance to fans so it thickens up and keep up nitrogen nutes until week 3-4 of flower

Sorry heres some better images. About how long until I flush or should I start this immediately? Again I'm using coco mind you.

Some yellowing week 6 is pretty normal. That however looks more like under watering . I've let em dry out on accident to where all the leaves were droopy before and a couple days later see the same thing as that .