Mushrooms vary widely even amount the same genetic entity. People's responses also vay. 2 grams is usually a good amount for light psychedelia. If they are penis envy , albino penis envy. Panaeolus cyanescens zPanaeolus tropicalis. Psilocybe azurescens or another wild species 2-2.5 grams would be safe. If you don't know what they are you can post a picture and tag me.