Should I use Alum to get rid of silt and mud

[Amir]

The pool store recommended Alum to get rid of silt and mud. Any down side to using Alum or clarifier? thanks
Amir

[Tredge]

I've used clarifier in the past and it didnt do anything. From what I've read you need a LOT of it to make a difference....and even then it can cause other problems.

I'll never put clarifier in my pool again but thats just my opinion.