Physics:

This is your Toilet: 

(jump down)

Any Questions?

When a toilet gets flushed, the water sitting in the tank flows in to replace the flushed water in the bowl. If a toilet has been upper-decked, that tank water turns to sludge and not only contaminates and turns your bowl water brown, but can lead to severe water clogging.

Don't be a victim. Don't let this happen to you!

Read some helpful prevention tips now.