Yellow leaves and pistils falling off

[Zoomzoom07]

*Pics were added in my reply*

My samsquanch and Cdlc from mephisto just hit 5.5 weeks. I've having issues with entire leaves turning yellow and them slowly dying off. It seems to have started at the bottom of the plant but is slowly working it's way to the top. One plant is worse than the other but both are showing similar. The worse plant also has a bunch of white pistils that fall off every time I water or touch them.

I've been feeding 1/2-3/4th strength of general hydroponics trio following their schedule, using only distilled water plus 1/2tsp of calmag at each watering (about every 3 days).

-400w hps
-4g fabric pots
-Roots organic soil + ewc, perlite and powdered lime
-General hydroponics trio+calmag distilled water
-2.5x2.5x5 tent
-Temps 67-77
-Ph watering at 6.5/run off is at 6.4-6.6


Could this be a lock-out of some kind? Or is full strength not giving them enough nitrogen? I can't figure it out.

 

[Yeatster]

Pic of the whole plant will be mandatory for the in house dr.'s

 

[Yeatster]

Light distance?

 

[Waira]

...looks mosty like N defc., but yes, we need more whole plant pics, in normal light please,...

 

[Zoomzoom07]

Light distance is about 12-14 inches right now. I'll take better pics tonight as soon as I'm able.

 

[namvet25]

Take a pic with light of please,thanks.

 

[mikey2017]

Light distance is about 12-14 inches right now. I'll take better pics tonight as soon as I'm able.

What kind of light u got

Sent from my H1611 using Tapatalk

 

[Zoomzoom07]

400w hps with a crappy batwing reflector. They both seem shorter than what I've seen on here too.. maybe light was too close during first couple weeks?

 

[Waira]

better! ... she looks underfed, long term,... likely you went too light on the nutes,... feed her a stronger dose of them, bloom ratio's... do you have a chart? it will tell you how much of each to add to water,.....

 

[Zoomzoom07]

Well.. I've been following the chart and feeding full strength since you said that but then a few days ago I started doubling the charts full strength amounts. No luck, they're almost all (entire plant) yellow now and almost no fan leaves left. Triple checked PH (6.5 during feed and water and 6.5 run off), temps, light distance, humidity, soil moisture..ect.

At a loss because I've never had a grow go this wrong. The only thing different this time is switching to Mephisto seeds.. :/