EasyPro™ Tranquil Decor In-Ground Fountain Basins Redi-Basins Specs_Reduces Phosphate Levels Matala offers an air diffuser

Matala offers an air diffuser assembly with hollow base that can be filled with sand or gravel

This extends the cleaning time for the EZBio11 Plus

Biological filter media is included

Wear-resistant ceramic coated shaft

EasyPro™ Tranquil Decor In-Ground Fountain Basins Redi-Basins Specs_Reduces Phosphate Levels Matala offers an air diffuserRBH29 Redi Basin 29" x 24" Perfect for fountains and bubble features. This sturdy basin includes center supports under the lid for extra heavy loads. 11. 5 clearance inside basin with lid on Pump access door 4 x 5. 5 Five 1 diameter holes and One 1. 3 hole in lid for tubing Use included center support under lid for heavy loads up to 300 lbs. 30 gallons capacity