2" Bottom Drain Kit (BD1 drain) incl 2" Bulkhead, Valve, Fittings Ultima II Biotube Filters Advantages of Bio Balls over

Advantages of Bio Balls over Lava Rock Bio Balls are inert

1 Green (coarse) Matala Filter Pad

A bottom drain and an air diffuser built into one unit

Unlike many available at department stores

Waterfall Installation Kit - includes PVC glue

2" Bottom Drain Kit (BD1 drain) incl 2" Bulkhead, Valve, Fittings Ultima II Biotube Filters Advantages of Bio Balls overThis terrific system lets you have both the benefits of a skimmer and bottom drain! The bottom drain is installed with flexible PVC pipe carrying the water under the liner, through a bulkhead and into the skimmer where a valve controls what percentage of the water goes through the skimmer faceplate (surface water) versus through the bottom drain. Kit includes #BD1 Bottom Drain, 2" Bulkhead fitting, 2" valve and other fittings. Kit does not include 2"