Weekly Deals! 15% Off All CMH Ballasts, Bulbs, Reflectors, and Complete Kits at GrowersHouse.com! Discount Automatically Applied In-Cart, Offer Valid 12/13 - 12/19. shop now at growershouse.com and avail this offer by using Coupon for Growers House below during check out. Offer Exp: 12.20.18.