First time Hydro

This is my first hydro run. As you can see in the picture she is fading to yellow.

Amenisa Haze

ph 5.9
Water temp 75f
ppm 1200
Led light 18- 20 inch from canopy.


1/2 strength Fox farm flower nutrients & 1/4 strength cal mag.
water change 1 week ago. after water change ph was off 6.4 gradually brought down over three days. Ph has been 5.8 - 5.9. 4 days.

She started off as a sprout withjust one deformed leaf.
Pic 1 today
Pic 2 June 22

Any help is appreciated.

Are you running DWC?

75 (23.5C), is awfully warm water and you reduce your dissolved oxygen the warmer water gets. This limits your use of nutrients. I'd try to get the temp of that water down to around 66 (18C).

In the meantime I'd drop my PPMs to around 800ish, not over 1000 and see where you go. You'll get your answer quickly. That's the nice thing about hydro.