API® POND Pond-Zyme® Sludge Destroyer® Select Size:8 oz-PC146 Arrange modular blocks in any

Arrange modular blocks in any configuration with any number of layers to accommodate almost any design

it will be shipped freight

Very durable

These pumps are unique

Being filled with epoxy

API® POND Pond-Zyme® Sludge Destroyer® Select Size:8 oz-PC146 Arrange modular blocks in anySpecially selected bacterial strains in API POND ZYME SLUDGE DESTROYER bacterial cleaner immediately begins breaking down fish waste and dead algae that cause cloudy water, sludge build up, and debris that clogs pumps and filters. Through enzymatic action, POND ZYME SLUDGE DESTROYER bacterial cleaner reduces pond maintenance and keeps pond water clean and clear. It is a 100% natural product, & safe for all pond fish, plants, and wildlife. Initial dose