repair worn seals, and a small ball of foil does not displace enough water to meaningfully reduce a toilet’s water use.
The trick also introduces an unnecessary object into a mechanism that depends on moving parts and reliable seals.
In other words, the foil itself isn’t magic. And the fact that a video shows a successful flush afterward doesn’t prove that anything has improved.
What Does Aluminum Foil in a Toilet Tank Actually Do?
The short answer? Usually, nothing useful.
A typical toilet tank contains water, a fill valve, a
