Just am update....I have been making a point to Open up the door & Vent windows each day to get the O2 flowing through my Greenhouse and my Coleus are really looking good!! Im trying my best to tweek my Greenhousing habits of the nearly 600 Coleus I have potted in 4" nursery pots..... proper watering & fertilizer , Ventilation and Sun Lighting . I thank everyone here on the forum for their helpful suggestions!!!