Just best to remember when vegging plants overtime it's better to keep upsizing their environment to prevent the encumbering growth. Little bittie starter, then a wee bigger, maybe again and then bloom that root mass.....
I'd get a in out thermometer and know that box tem first. No guessing. I got that air conditioning thing but temps move about seasonally. Two week plants sprouted outside or under a thousand watts as are mine can handle the infra red ultra violet stressors make sure they aren't drowning and...