Aquatic Plant-Fertilizers-Tabs & Sticks-Care Free Enzymes CAREFREE ENZYMES AQUATIC PLANT FOOD SPIKES 12/PK Helps promote the exquisite blooms of water lilies as well as vigorous growth of all aquatic plants. USAGE/TREATS: 1 spike per plant, every 4 weeks Package includes 12 spikes. AQUATIC PLANT FOOD SPIKES 12pk CAREFREE ENZYMES: AQUATIC PLANT FOOD SPIKES 12pk $2.50 SKU: CFE94011 Click here to save 5% off of your order!