Originally Posted by BeerLogic
I usually use about a quarter ounce in a wit.
A quarter ounce = 7 grams. I think GoP are sold in 2 gram packages for $s. I think a quarter ozs is a little too much. I generally use 1 level teaspoon for 6.5 gallons, and that is about 2.8 grams.
For the OP:
They will work fine in secondary. crush the grains first, and soak in a small amount of vodka (to sanitize them), then add the grains and vodka to the secondary.