yes and no. excess light intensity will lead to leaf twisting and flower bleaching. ime it'll show calcium def too, especially under LED. Turning down the lights when other conditions are off can help alleviate symptoms such as leaf twisting, bleaching, calcium def, purple stems, etc. The plant will only uptake what the plant needs, and the pH range also plays a role. There's a massive misunderstanding of how nutrients work. You can't force-feed a plant. It'll take up what it needs, or it can, depending on the other dozen or so factors influencing plant biology.
With mild excess EC and VPD + CO2 concentration just out of range for conditions (I think this is what's happening here) you start to see "The Claw," dark leafs, and slow growth. Pushing the plants a bit hard without CO2 injection (yes, 1.4 EC feed is pushing under LEDs without CO2) can lead to this. The plants can take the nutes but they can't take in enough CO2 to compensate for their transpiration rates. Think of it like the pump factor from taking pre-workout and hammering out a superset where your muscles are super tight and anger and you're breathing like you ran a triathlon. Dropping the EC will bring the plant back into "happy" for its conditions.
With excess EC, you start to see leaf burning and other problems. This is the territory roots are actually being damaged and the water tension in the media is too much for the plant to uptake damn near anything, but it'll uptake anything it can get.
Long winded version of Mulder's chart and common pH nutrient ranges.
