i dump the powder into an empty water bottle, ad a few turkey baster squirts of aquarium water, shake it up real good and then pour it into my tanks. i use ~ 3/4 scoop and divide the shaken water bottle contents between a 10 gal, 20 gal, and a 5 gal. i just sort of eyeball the amounts. I have some shrimp but i mostly add it to help with biofilm for my otos.
tomorrow we could all be arrested, tomorrow we could all die