Hi man! do remove the humidifier asap (!!!) :) I hope you don't want to consume molded buds?! doesn't matter how low the humidifier is, just remove it :) this plant is so advanced in flowering, you should not care on how the leaves are looking or curling anymore. It's time to harvest soon. Have you done your flush? by the way how old are this plant into flowering? they look much older then week 4 as you mention on your diary