Cloverleaf Bottom Drain with Dome – 4" x 2" & 9" x 4" Koi Pond Bottom Drain

Create a cleaner, healthier, and more efficient pond filtration system with the Cloverleaf Bottom Drain with Dome. Designed for professional pond construction and high-performance pond filtration, this heavy-duty pond bottom drain removes waste, sludge, and debris directly from the deepest part of the pond, helping to maintain excellent water quality while reducing maintenance.

Suitable for koi ponds, garden ponds, wildlife ponds, ornamental ponds, and large water features, the Cloverleaf Bottom Drain with Dome is an essential component for gravity-fed pond filtration systems. By transporting solids directly to the filtration unit before they can break down, the bottom drain helps reduce sludge build-up, improve water clarity, and support a healthier aquatic environment.

The integrated dome cover encourages efficient water flow across the pond floor while preventing larger debris and fish from obstructing the drain. Whether constructing a new pond or upgrading an existing filtration system, a bottom drain provides one of the most effective methods of waste removal available.

Key Features

• Heavy-duty pond bottom drain with protective dome.
• Suitable for gravity-fed pond filtration systems.
• Helps remove sludge, fish waste, leaves, and debris.
• Promotes improved water quality and pond hygiene.
• Reduces maintenance and pond cleaning requirements.
• Suitable for koi ponds, fish ponds, wildlife ponds, and water features.
• Compatible with liner, concrete, fibreglass, and pre-formed ponds.
• Durable construction for long-lasting performance.
• Designed for professional and domestic pond installations.
• Ideal for new pond builds and pond refurbishments.

Why Install a Bottom Drain?

Waste naturally settles at the lowest point of a pond. Without a bottom drain, this organic matter gradually decomposes, producing sludge and reducing water quality.

The Cloverleaf Bottom Drain with Dome continuously draws waste and debris from the pond floor into the filtration system, helping to:

• Improve water clarity.
• Reduce sludge accumulation.
• Minimise filter maintenance.
• Support healthier fish and aquatic life.
• Improve circulation throughout the pond.
• Enhance the efficiency of gravity-fed filtration systems.

Bottom drains are particularly beneficial for koi ponds, where high fish stocks and feeding levels generate significant organic waste.

Available Sizes

Cloverleaf Bottom Drain with Dome 4" x 2"

The compact 4" x 2" model is ideal for:

• Small to medium garden ponds.
• Wildlife ponds.
• Ornamental ponds.
• Smaller koi pond installations.
• Gravity-fed filtration systems.

Cloverleaf Bottom Drain with Dome 9" x 4"

The larger 9" x 4" model is suitable for:

• Large koi ponds.
• High-flow filtration systems.
• Professional pond builds.
• Commercial aquatic installations.
• Large gravity-fed pond filtration systems.

Product Specification

• Product: Cloverleaf Bottom Drain with Dome.
• Available Sizes: 4" x 2" and 9" x 4".
• Includes protective dome.
• Suitable for gravity-fed filtration.
• Compatible with pond liners, concrete, fibreglass, and pre-formed ponds.
• Suitable for koi ponds, fish ponds, ornamental ponds, and water features.
• Durable, weather-resistant construction.

Pond Construction & Installation

The Cloverleaf Bottom Drain with Dome is designed to be installed at the deepest point of the pond, where waste naturally accumulates. Pipework is routed beneath the pond to the filtration system, allowing debris to be removed efficiently before it can break down and affect water quality.

For liner ponds, using a quality pond sealant during installation helps create a reliable waterproof seal around the drain assembly.

Complete Your Pond Build

A bottom drain is one of the most important components of an efficient pond filtration system. Pair your installation with quality pond liners, pipework, filtration equipment, pond sealants, and construction accessories for the best results.

Browse our complete range of pond bottom drains and pond construction products here:

Bottom Drains Collection

At Pond Supplies Essex, we supply premium pond construction materials, koi pond equipment, bottom drains, pond filtration products, pond liners, pond plumbing fittings, and specialist pond supplies for pond builders, landscapers, and pond enthusiasts throughout the UK.