lower leaves getting yellow spots then curled

[dpuppet]

first time grower

Strain - 5K Puff
# of Plants - 2
Grow Type - Soil
Grow Stage - Vegetative
Bucket Size - unkwown
Lights - (1) 250 Watt HID
Nutrients - General Hydronponics
Medium - Perlite,Vermiculite,turf【seller told me the ph is between 5.5~6.5】
PH - 6.5[tested with pH test strips ]
RH - 40% to 50%
Room Temperature -70


The lower leaves getting yellow spots and then curled,I doubt It's phosphorus deficiency,so I gave it phosphorus with organic fertilizer,but the problem didn't stop spreading,I've already cut off two lower nodes.

Ignore the white spots,its toilet paper

Please help me,Thanks!!

 

[nickelrw87]

mine is kind of like that - but its much older than yours. I think your PH is a bit low for soil... but ive never done soil... lol Subscribed, maybe your problem is the same as mine

 

[2clean]

6.5-6.8 for soiil.measure run off too.