00:15 Why are drains needed
00:38 What are the components of the drains
01:00 How are drains held in place
01:15 How does a drain work
02:03 Why output is sometimes uneven from side to side
02:35 How to "strip" or clear a clogged drain
03:27 What if there is leakage around the drainage tube
04:00 What to do if the drain won't hold suction or it has pulled out
04:40 Showering with drains