looks like you have a little humidity problem there if you take a look at your first pic the gauge has moisture all over it, im new but by looking i seen that probably now that but thought i would point it out. hope you fix that problem man

could be over on nutes and also have you been spraying them? and is their nutes in the foliar spray water?

Im in third week of flowering running an areo system in 4 in tube. my leaves are turning yellow, iv read that its nitrogen deficiency. so i have taken measures to up the nitrogen level in week 4 of my flowering cycle? i'll need ligit advice...

FIRST POST:
1) PICTURE OF PLANT *** VERY IMPORTANT ***
2) Growing indoor or outdoors: INDOOR
3) Watering schedule: EVERY OTHER DAY, REMOVE EXCESS WATER
4) Growing Medium: ORGANIC POTTING SOIL
5) What stage of growth: 19 DAYS OF FLOWERING

OTHER:
-FEMALE, NO SIGNS OF A HERM.. FOR NOW
-I USED A TEASPOON PER GALLON OF A 0-10-10 SOLUTION, ONCE EVERY 10 DAYS
-THE END RESULT CAUSED HALF OF MY PLANT TO HAVE CURLED LEAVES AND BURNT TIPS. CURRENTLY STOPPED AND SWITCHED TO REGULAR TAP WATER
-LIGHTS: 3 COOL WHITE BUBS AND 3 WARM WHITE BULBS STRUNG ON LAMP (SEE PIC)

*** PLEASE REMEMBER THAT IM NOT A PROFESSIONAL, THIS IS A 'BAG SEED PRACTICE PLANT' TO SEE IF TIME WOULD ALLOW ME TO TAKE CARE OF A BEAUTIFUL PLANT. I GREW PREVIOUSLY UNDER THE SAME CONDITIONS AND THE HARVEST WAS GOOD, BUT NOT BOUTIFUL.. WHICH IS ALRIGHT W/ ME..

ONCE I HONED SOME SKILLS I WILL INVEST IN BETTER EQUIPMENT AND SEEDS. TIPS AND ADVICE IS GREATLY APPRECIATED.

ALOHA,
paka1010

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Plant began yellowing then tips proceeded to brown. Using aerogarden pro 200, 3 cfl bulbs each 26 watts 1560 lumen, P.h. is 5.9, light cycle is 18 hrs on/6 off. We only have one plant growing in this system because this is our first attempt, i also thought the reason it was yellowing was due to over nutrients becuase there was only 1 plan and it was being feed to much but i flushed the water and checked the ph and stll is are around 5.9
its been a couple days since i changed the water and then didn't put any nutrients but still continues to yellow

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Im having Similar Issues with my plants. A few burnt spots or black blotches...don't know what it could be. I think I sprayed them and the 400 W HPS was to close causing the burns, yikes.

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Growing indoor with 2 x 21W cfls
Was Watering: 2 or 3 times depending on the moisture and weight of the medium
Growing on Coco
I am on 36th day vegetating

It happened after change my nutrient for organic, so now I am giving the old nutrient with more nitrogen and spraying buble water in the morning, but I am in doubt about heat problem.