whatever works man. id say about the middle, or as much as it an hold.
its a bong on a bong you got double filter so it cools and smooths the smoke nice.
five0addict Reviewed by five0addict on . Double Perc Bong Question yo i just bought a double percalating bong ATX..im confused by it, where do i let the water in the perculator sit, like wat level, i have it even with the tube in the percu -ster Rating: 5