I like using Whirlfloc tablets which are a refined type of Irish Moss and can be tossed in 15 minutes before the end of the boil.As Martin states they are not a panacea but are quite effective and very easy to use.
Good to know though they take longer than 5 minutes to dissolve.
Quote from: euge on November 10, 2012, 11:42:07 AMGood to know though they take longer than 5 minutes to dissolve.The ones I get seem to dissolve in a few seconds.