General Hydroponics is the industry leader with 30 years of success and a product line used by NASA, universities and gardeners worldwide. This is a highly concentrated nutrient additive that promotes abundant flowering and helps facilitate ripening in annual flowers and herbs. KoolBloom™ is designed to be used during the second half of reproductive growth. It enhances the production of essential oils & fragrance in flowers and herbs. Details: Base Size: 2.2 Lb * Additional options/sizes may be available. Please check 'Available Options' below. Option/Size upgrade prices already include additional shipping charges.Call 828-299-9989 or email newagegardens@gmail.com