Soak them in 1 liter of water for every 10 grams of water beads. infact, from 0,02 grams per water beads (2/100 of a gram), the max weight after soaked is between 2 and 3 grams. for example, if you want to do 10 grams of water beads, add 1 liter of water, then after 4 hour you can add half liter more.
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