Hi there Joni, you're actually right about the slow growing. But it's not about your light :-) a plant's growth rate is determined by the relationship between temperature and humidity. Right now your temperature is quite high, so your humidity should either be lower or higher. If you already have high humidity you should air more. but i'm guessing you have low humidity, so the best thing you can do is get a mister, or an evaporative cooler, or simply just spray the plant up to six times a day with water or a water + calmag solution. hope this helps ! 🚀