Hi there, how far is your light from canopy ? Could be light burn which will cause similar symptoms.
If your light is in right height range and not to bright, then look at your watering habits and make sure to let the pot become light before watering to get runoff !!
I'd also look at your nutrients and provide a balanced feed with not only NPK but micronutrients aswell.
I use TA tripart and these grow, bloom and micro nutrients are working fine for me, no other supplements so far 🤞. Try and keep it as simple as possible, too many people pump this and that into a plant to correct problems (which could be the cause of many of them 🤔 ) without getting the basics right to start with, ie environment, pH, correct watering etc.
Get these right and your plants will be happy 🤗
Good luck fellow grower 👍