Skimmer filters, pressurized filters, gravity filters, drum filters and bog filters compared for different ponds.
Filters come in many shapes, but all do the same two jobs: remove particles and house bacteria. Which type suits you depends on pond size, fish load and how much cleaning you want to do.
Skimmer filters catch debris and house a filter mat at the pond edge. Pressurized filters sit away from the pond and push water through foam or media. Gravity filters sit at the top of a waterfall and pour water back. Drum filters screen particles automatically. Bog filters use plants and gravel.
Debris and mat in one.
Compact and flexible.
Often at a waterfall top.
Self-cleaning for large ponds.
Natural and quiet.
Home for beneficial bacteria.
Koi PondsDeep, well-filtered ponds built for koi, with the volume, circulation and safety features that keep big fish healthy…Explore 
Pond RebuildsTired, leaking or poorly built ponds taken back to the bones and rebuilt with better depth, liner, filtration…Explore 
Commercial Water FeaturesEntrance fountains, lobby features and landscape ponds for hotels, offices, retail centers, communities and churches.Explore 
Pond CleaningA full pond cleanout that removes built-up muck, debris and algae and resets the water so the pond…Explore 
Algae and Water ClarityFind out why a pond is green or cloudy and fix the cause with better balance, filtration and…Explore 
Pump and Filter RepairNoisy, weak or failed pumps and clogged filters diagnosed and fixed or replaced with equipment that suits your…Explore 
Skimmer and Biofalls RepairSkimmer boxes and biofalls that leak, overflow or clog, repaired or replaced so debris gets caught and water…Explore 
Pond FiltrationMechanical and biological filtration sized to the pond and the fish so the water stays clear all season.Explore Size a pond, pick a pump or ballpark the cost.
Pond Volume and Gallons CalculatorEnter length, width and average depth and see the gallons your pond holds, the pump flow to aim for and the water for a first fill.Try it 
Pond Pump Size CalculatorEnter pond volume, waterfall width and lift and see the pump flow to look for.Try it 
Pond and Water Feature Cost EstimatorPick a project and a size and get a ballpark planning range.Try it Large ponds with koi often use a drum or a pair of mechanical and biological stages.
Rinse media in pond water. Chlorinated tap water harms bacteria.
It depends on the load. Weekly in summer is not unusual for heavy loads.
Material guidePond LinersEPDM rubber, RPE, PVC and preformed shells compared: how long each lasts, how they handle and where each…Learn more 
Material guideStone and BouldersLimestone, fieldstone, river rock and flagstone: which stone looks right, how it behaves in water and how it…Learn more 
Material guidePond PumpsSubmersible, external and solids-handling pumps compared: sizing, efficiency and what to ask before buying.Learn more 
Material guideAquatic PlantsWater lilies, marginals, floaters and bog plants: which grow well in Middle Tennessee and what each does for…Learn more Quick scheduling, careful work and a clear price before we start.
