Bulkhead Koi Tank Connectors for hydroponics aquaponics Koi ponds.
Free Postage in the UK. Target delivery - three days.
Often used to connect a pond bottom drain to part 1 of a fish pond filtration system. Uniseal bulkheads are less expensive, take less time to install and will last without failure. Not prone to failure in freezing temperatures.
Pipe O.D. 4.500" - 114mm Hole Size 5.0" - 127mm
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