My 1st Little Hydro Farm

W4 D1 - Growth has exploded in the last few days. I assume the combination of the extra light, toping / FIMing. I'm still unsure what I should be doing for training. Feel free to offer advice if you're reading this. Starting to smell a bit like a greenhouse, but I'm a noob so I don't know how to describe it or what to expect. W4 D2 - noticed signed of calcium deficiency a few days earlier, added cal-mag today. W4 D5 - Growth still strong. Been working on a DIY swamp cooler to lower room temp and raise humidity. My interim redneck version is actually working. It's a fan blowing on a wet towel suspended in water.