How do I add bleach?

[chem geek]

This linked thread goes into more detail on this question, but the conclusion is the same. Pouring chlorine over a return in your pool or even dumping it into the main pool area (with the pump running) will not cause any problems. Pouring it into your skimmer may cause problems if you have an inline chlorinator for Tri-Chlor pucks, but if you don't then it's probably OK (even though I argued that there might be some small risk to equipment or filters).

Richard