Any Idea What is going on Flowering final Stretch

[Shankemdirty]

Two plants I have looked around Can't seem to link it to anything they are on the Final 4 weeks of Flowering. Any Idea's are Appreciated.

 

[Shankemdirty]

Been More Busy This Grow So i Have not Been Able to Maintain perfection had a few temp Swings but they showed no sign of stress the small one started yellowing awhile ago i gave it more calimagic it slowed down for awhile but it finally went full yellow also am concerned about the purplish color i did put in a new light but i am unsure if that would cause that reaction only reason i consider it is cause the one plant is going purple on top but does not explain the smaller one both are auto flowers. They Are Really Close to being done i flushed a day ago

 

[SoOrbudgal]

Well it's just the learning of how these grow from seed to harvest. They love a drier warmer more than cool. It's bothersome to have a sick looking plants i know i've been there many times. I think you got root rot in that really yellow little one ( although she has really good looking bud structure) I'd just let that one go and dry out she's done it's what i would do. Long slow hang and cure. I like removing dead dying leaf would not hurt to do that to little one she'd look a heck of alot better to you. I would still be mighty happy with what you got there man

 

[Shankemdirty]

@SoOrbudgal Yeah probably will just chop him it was my fault they started to get sick i Decided to switch the light on the final 6 weeks of flowering i Could not wait to use the light even a little bit lol

I had them under VIPARSPECTRA UL Certified 600W LED Grow Light, with Daisy Chain,Veg and Bloom Switches, Full Spectrum Plant Growing Lights for Indoor Plants Veg and Flower

1 above each plant so 2 lights for 80% of their life basically

Then i put them under HLG 600 R Spec Commercial Indoor Horticulture LED grow light is designed to replace 1000watt HID. Each HLG 600 uses 4 of our custom designed full spectrum high efficiency white light quantum boards with Samsung LM301H and Deep Red 660nm LED's. This unit is dimmable, with wattage output from 60 to 600 watts.


Do you think the upgrade in light caused the plants to go unstable the problems started when i changed the light but i also had temp issues when the plants wen't to sleep for 2 different nights i am in Canada And a few nights been freezing over at night so two times the temps dropped to 50 but i corrected it now the temps only go as low as 65 during dark period and 70 to 75 during day

The Pictures show the old lights to the new one i am running the new one at 50% cause when problems started popping up i had it near 80% when problems continued i dimmed to 30% but put it back to 50%
Cause there was not much change

These problems are way better then my Last grow tho i had wpm last grow and that was rough i was also surprised how big the auto flower got on the left. Pretty happy for them being autoflowers

 

[UndergroundFarmer]

I've seen the same kind of thing in hydro on plants with root rot. You might want to investigate the root ball after chop. If roots look good, then maybe you just got a fast finishing pheno.

 

[Shankemdirty]

Harvested the little one Everything Looked good no signs of root rot was all nice thick healthy roots besides the point it did need to be harvested letting the taller one continue for a bit.