Little Giants new line of âflexibleâ water feature pumps are designed for in and out of pond use, and are constructed with stainless steel and durable thermoplastic. Plus, each pump meets the rigorous demands of the most impressive water features. Energy efficient and ideal for powering water features and pond filtration systems with flow requirements from 1,000 GPH to 8,700 GPH. Ideal for continuous duty to operate in the most rigorous applications.