Evolution Aqua 4" Bottom Drain with Air Diffuser AquascapePRO This beneficial bacteria blend is

This beneficial bacteria blend is instrumental to a proper spring opening and organic balance in ponds

These easy-to-use pumps feature energy-efficient

These highly-efficient models use the latest filtration technology to decrease maintenance time and provide quick

doesn't start or makes a grinding sound

Reliable and quiet

Evolution Aqua 4" Bottom Drain with Air Diffuser AquascapePRO This beneficial bacteria blend isThe EVO 4" Aerated Bottom Drain is made of heavy duty Schedule 80 PVC. It features both a 4" horizontal pipe fitting and a 1" side mounted aeration pipe fitting to make aeration simpler. The center stand pipe can be adjusted, threading to the underside of the aeration plate and gluing to the bottom of the drain base. Includes stainless steel screws, liner ring and aeration disc with plate. We recommend between 30 and 100 liters of air per minute with