Blue Thumb Serenity External Pond Skimmer Microbe-Lift The humic acid in the

The humic acid in the pellets produces hydrogen peroxide

Includes 2 HP Media Agitator and spring check valve

ETL Listed to UL and CSA standards

With its 3 Super-Bright LEDs

Blue Thumb Serenity External Pond Skimmer Microbe-Lift The humic acid in theBlue Thumb (formerly PondBuilder) Serenity Skimmers offer a great solution for new or existing ponds and water gardens! Remove debris before it can settle to the bottom and turn into sludge. Includes detachable door, natural cover lid, filter mat, mesh leaf net, stainless screws, screw caps, liner clips, silicone and installation instructions. Natural faux lids provide accessibility and concealment Buoyant door floats with the water level so you