Kockney Koi 4" Tommy Bottom Drain
Kockney Koi 4" Tommy Bottom Drain
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Frequently Asked Questions
What does 'Tommy' mean in the product name?
What does 'Tommy' mean in the product name?
It's another name for this mushroom-style dome design of bottom drain, as used across the koi keeping trade.
Will the dome stop my fish getting into the drain?
Will the dome stop my fish getting into the drain?
Yes, the mushroom-shaped dome is designed to let waste and debris pass through to the drain while keeping fish away from the opening.
What size pond is this drain suited to?
What size pond is this drain suited to?
It's built for higher flow rates, making it most suitable for koi ponds and large garden ponds rather than small, low-flow setups.
Which pond types can I fit this into?
Which pond types can I fit this into?
Fibreglass, concrete and rubber-lined pond construction are all listed as compatible.
Where is it made?
Where is it made?
It's manufactured in the UK, by a maker with over 35 years of experience producing pond equipment.
A mushroom-domed bottom drain for koi ponds and large garden ponds, built to draw sludge and fish waste off the pond floor while keeping fish well away from the outlet itself. It helps keep the base of fibreglass, concrete and rubber-lined ponds cleaner with less manual maintenance.
Overview The Kockney Koi 4" Tommy is a mushroom-domed bottom drain designed to pull waste from the floor of koi ponds and large garden ponds, keeping fish safely away from the outlet while it helps reduce sludge build-up on the pond base. It suits koi keepers and pond builders working with fibreglass, concrete or rubber-lined pond construction.
Sited in the deepest part of the pond, the domed cover lets sludge, debris and fish waste draw through to the filtration system while physically blocking fish from the opening. This cuts down how often the pond floor needs manual cleaning and supports steadier water circulation.
The outlet fitted here is built for higher flow rates, making it better suited to larger pond installations than small, low-turnover ponds.
You receive one bottom drain unit, ready to fit into the pond base.
Key benefits This drain is manufactured in the UK, where Kockney Koi has been producing pond equipment for over 35 years. The mushroom dome approach is a long-established choice among professional pond builders and koi keepers for combining safe waste removal with fish protection.
| Specification | Detail |
|---|---|
| Outlet Size | 4 inch |
| Drain Style | Tommy / mushroom dome |
| Pond Compatibility | Fibreglass, concrete and rubber-lined ponds |
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