
Cistern Displacement Bags (3)
Sit in the cistern to lower the volume of water drawn per flush.

Dye tablets that reveal a silent cistern-to-bowl leak.
Free worldwide shipping over $45 · Dispatched in 1–2 business days
Twenty dye tablets that colour the water in the cistern. If colour appears in the bowl without flushing, the flush valve is leaking — a common cause of water running away unnoticed.
Drop one in, wait a few minutes and check the bowl. A fast, no-tools way to find a silent leak so it can be fixed.
For use in toilet cisterns only. Keep away from children and pets.
For hygiene reasons this is a sealed contact item: once opened it cannot be returned unless faulty. Unopened items can be returned within 14 days of delivery.
This product reduces the flow rate of water. We don’t claim any specific money, water or percentage saved — results depend on your home and habits.

Sit in the cistern to lower the volume of water drawn per flush.
Workshop favourite
Best valueFillable banks that displace water in the cistern to lower per-flush volume.
Starter setSix screw-in aerators that mix air into the stream to lower tap flow rate.
Rated flow ≈ 5.7 L/min (1.5 GPM)