What does this look like?

Hello everyone, I could use some help!

Strain : Ultrasour by T.H. Seeds
Soil : FFOF
Water : RO with calmag+ ph to 8



I just started a 1/4 strength dose of Grow Big, I don't know if I'm seeing a burn or deficiancy?

I appericiate any advice

I had some similar things happening in my grow world. Mine was caused by to much wattage not enough nitrogen , so I was basically starving my plants. Deficiency Is my guess..

I feel your ph is way off, you should be around 6.5 or so, your water is too alkaline.