3" Bottom Drain with Built In Diffuser UV Clarifiers Lava Rock tends to shred

Lava Rock tends to shred media bags

Pond Liner Underlayment

Kit available with BDA Bottom Drain with Diffuser via special order

This terrific system lets you have both the benefits of a skimmer and bottom drain

Water Gardens and Aquariums

3" Bottom Drain with Built In Diffuser UV Clarifiers Lava Rock tends to shredA bottom drain and an air diffuser built into one unit! The circulation created by the air diffuser will increase the amount of debris removed by the bottom drain and will increase oxygen levels in the pond. Bottom drain base has six stainless screws and two rubber gaskets for a positive seal when penetrating liner! Connects to 3" PVC pipe and fittings. Air diffuser is set up for 1 2" or 5 8" tubing, recommended air flow of 1 2 to 2 CFM.