Extractor on and also a small oscalating fan blowing gentley on them. Get them stems hardend up. Passive intake at the moment. 3 are a tad smaller than the others but no problem there. Lights on 18-6. Temps 27 day and 22 night. Humidity is at a steady 60 - 65. All they have is a mix of hot and cold water, strait from the taps, with 1.5ml of bb root juice per 1ltr