Recently I’ve noticed this happening to leaves on my seemingly healthy plant. The plant is about 6 weeks old and is growing in FFHF with 20% Perlite. I’ve been using advanced Nutrients Connoisseur consistently, and have had no other problems with the plant. This came out of nowhere! Does anyone know if it’s a deficiency, or if I potentially have a pest problem? I saw a few little tiny gnats in my grow tent but only a few, so I assumed they had just gotten in from outside. Any advice and insight is greatly appreciated!!