Question about using gelatin?

Hello I have a 3gal batch of beer that I need to use gelatin to help it clear just don’t know how much gelatin to use for 3gal. I have use gelatin before but for 5gal batch’s???

When I use it (for non-iPa beers). I typically use about 1 gram per gallon. I think I read it in Palmers book.

Personally I’d dump the whole package. It’s all going to settle out. How many grams in a package?

Disclaimer. I’ve only used gelatin a few times because I never saw much difference in clarity. Why are you using gelatin?