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

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

phosphates and sludge from your pond while clearing the water and seeding your biological filtration

so a 100 watt transformer would be a good

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"