@Brynnbuzz222, Hi friend) Topping plant on 4-5 total nodes formed. I achieve this length of veg by creating the most pleasant conditions for the plant to flourish. Temperature control, natural carbon dioxide inflow from the room, lighting power level, air humidity using an ultrasonic humidifier. The air humidity should be high. The better the conditions, the higher and more powerful the plant grows. I also use natural commercial plant growth stimulants once a week such as amino acids and seaweed extracts.