BOTTOM DRAIN / AERATED BOTTOM DRAIN - 2" & 4"

Bottom Drain / Aerated Bottom Drain – 2" & 4"

A high-quality pond bottom drain available in 2 inch and 4 inch sizes, with aerated bottom drain option. The cornerstone of any well-designed Koi pond filtration system, bottom drains remove waste directly from the pond floor for efficient, low-maintenance water quality management.

Key Features

• Available in 2" and 4" sizes – suits small hobby ponds to large Koi facilities.
• Aerated bottom drain option – integrates with an air supply to create a circular current that directs waste toward the drain for highly efficient waste removal.
• Gravity-fed waste removal – continuously draws settled waste off the pond floor without manual cleaning.
• Durable construction – built for permanent installation in concrete, GRP, and liner ponds.
• Essential Koi pond component – improves water quality, reduces maintenance, and protects fish health.

Specs

• Sizes available: 2" and 4"
• Type: Bottom drain / aerated bottom drain
• Installation: Permanent pond floor fitting
• Brand: Nishikigoi

Why a Bottom Drain?

A bottom drain is the single most effective waste management tool in a Koi pond. Fish waste settles to the lowest point — a bottom drain removes it continuously before it breaks down and degrades water quality. The aerated version maximises this effect by creating a sweeping circular current.

Tip

For ponds over 5,000L, use a 4" bottom drain. In larger ponds, multiple drains ensure complete floor coverage. Contact us for installation guidance and sizing recommendations.