Step 3: Filter it out
Pour the ammonia container and iodine crystals through the coffee filter, and then quickly while it is still damp move the filtered crystals to where you want to set them off. It is not a good idea to do what I am doing in the picture and hold the coffee filter in your hand, I used water for the photos so it is not actual NI3 (it was raining outside, and I didnt want to have to deal with setting it off). Once the crystals are settled in their final resting place, wait for them to dry, which can vary from 30 min to a few hours. Use a long stick to set them off.