no offense to the person with the 2 liter but trust me n try this please....i been smoking weed for a while now.......constantly all day every day.....for like the past 4 years i dont think theres been more then 5 hours without being blazed........n i smoke ONLY gravitys n blunts....once n a while ill smoke out a bowl like once a month....i definetly know the deal on gravitys

me n my boys always would smoke gravities be4 school n the cars n shit just chilling........we made this "travel size" gravity bong n it actually works better then the 2 liter i have found

what u need is simple

a liter bottle with the big caps from like 7/11 or somethign u know like pepsi or coke or hawain punch bottles
a bowl head
the giant cup u get from 7/11 the big gulp
something sharp
lighter
weed

take the 1 liter and in all the ridges on the bottom poke small holes..about the size of a slightly bigger then average pen about 4-5 holes
take the cap from the liter bottle n put the bowl head into the cap making it airtight....i like to just burn the hole n press the bowl thru n fire it up making the plastic perfect around the bowl head
make one hole on the side of the liter bottle toward the top of the bottle (this is your carb) hole doesnt have to be big just a small hole

thats it

fill up the big gulp with water.....put the liter bottle in it....fill the cap with weed...light the bowl while holding the carb n lifting the bottle out of the big gulp slowly allowing the smoke to form inside the bottle.......unscrew the cap n suck n push down ........if u light it right you get RIPPED......


NOTHING including the 2 liter has ever gotten me as high as u can get with this.....its just the pressure the force the quanitity....i mean once u get used to this bong you'll have hits sooo thick the smoke will be a nasty NASTY yellow green color...n ull hit it take the whole hit n pass out.......ENJOY
Doughdabluntnut Reviewed by Doughdabluntnut on . Gravity Bongs I've never used one but my roomate did (had to get rid of it before anyone else had a chance-wasn't subtle). Basically it really seemed to zonk him-he was getting flashbacks off shroom trips and the like-who has used one and are they any good? Rating: 5