Deadhead OG First Grow in longggg time

Day 22 - 9/19 - Plants are drinking faster. Doubling to .5 gal per plant with Armor Si 1.5 ml/g and Azamax 14 ml/g. Ph 6.70-.75 - ppm 225. Minimal runoff with slow watering. Defoliated last three plants bottom three nodes fan leaves. Day 23 - 9/20 - No signs of stress after defoliating. Continue to grow very fast. Humidity has sky rocketed but it’s under control for now. Will buy large dehumidifier tomorrow. They are 15 inches now and I’m worried about height not knowing flower stretch. Switched to hps bulb tonight and light schedule to 6am-6pm. Week 4 is only 2 days lol.