EasyPro RealRock™ Landscape Boulders Model:DLB2R you need a pump that

you need a pump that produces 4

Internal sponge filters remove fine particles that can disturb flow

24 SP-400 400gph 8

which require more food

EasyPro RealRock™ Landscape Boulders Model:DLB2R you need a pump thatRealRock Boulders are ideal for concealing air pumps, water pumps, pond filters, ultraviolet clarifiers, lighting transformers and other equipment. These commercial grade faux stones are weather resistant, durable, lightweight and easy to move. The color and texture is part of material, not painted on, so it will not fade or crack. Made of recycled material. Includes vent, additional vents available by special order SKU Dimensions Color Vent