Phosphorous deficiency? Need another opinion

It's been 15 days since i planted my girls and somethings wrong
My plants are suffering from what looks like it may be a phosphorous deficiency but i am not sure

*check out my journal for this grow for additional info

https://www.rollitup.org/t/3-plant-bubbleponics-2-plant-coco-coir-led-grow.936840/


Blueberry





White Widow



Black Jack


- Stems are red/ purple
- leaves curling up
- Light green new growth
- working its way up from the bottom leaves
- leaves feel dry
- light green and light brown spots


running in 5gal top fed DWC
Day 15 since germ
All seeds are feminized
Currently feeding 1/2 recommended nutes of GH trio
24 hour light (300w LED + 2 x 34w LED)
reservoirs run kinda warm at 80*
34w lights are 12" from top of plants
300w light is 20" from top of plants (had it much closer but thought at first the curling leaves may be a result of light burn/heat stress)

If you have any idea whats wrong with my girls please help me! not real sure what to do. Should i up my nutes? I don't want to burn them!

Thanks, Bo

Try essential plus 1-0-1 biostimulant. Been using it for years both the garden and landscape to save plants from random deficiencies.

Do you have a ph pen and tds meter? What's it say?
I wouldn't attempt hydroponics without these basic tools.
Edit : I see your meter in the picture.

Chizzarules said:

Try essential plus 1-0-1 biostimulant. Been using it for years both the garden and landscape to save plants from random deficiencies.

Click to expand...

Thank you Chizzarules! Ill have to check it out.
Gonna be purchasing a new ec meter and changing my res out for 1/4 strength tonight. Ill post back in a couple of days on the girls progress

raise the lights. your plant is too short and not growing vertically, so raise the light. 1/2 strength nutes should be fine. maybe raise that too.