Bottom Drains are a crucial element in a proper koi pond. Without a bottom drain, fish waste and debris become trapped in a closed environment and the filter has no means to remove them. The result is a slowly deteriorating environment that will quickly become hazardous to the health of your Koi.
By installing a proper bottom drain at the lowest point of the pond, all of the sinking waste and debris will be easily and quickly removed and sent to the filtration system. This will result not only in superior water quality, but also vastly less labor by the pond owner,Let the bottom drain do the work for you!
These 4" Bottom Drains comes with an anti-vortex drain cover for bottom sweeping action. These 4 inch bottom drains can be used on liner ponds or on concrete ponds.