This is my first grow set up and I had a steep learning curve. The natural RH in my area is around 15-20% on a good day. I stunted three plants my first go. They were autos and one even started to flower at about 4 weeks old and an inch tall. They also had terrible fungus gnats from over watering and bad soil. I refined my process and am popping 4 more seeds. 3 Frosted Skywalkers and 1 Gummy Mintz, all autos from Mosca Seeds. Started in a shot glass of water with a dash of HO.