actually... you're wrong.. it will give your plant problems if it has sodium and all the crap in it... but if you get NO SODIUM Seltzer Water and make sure it has all 0's in the nutrion box, it won't hurt the plant... the plantroots are suppose to benefit off of the CO2 and the bubbles helps loosen the dirt around the roots, which gives it more oxygen....i've done it before... i didn't give it seltzer everytime.. i would give it water one time.. then seltzer the another time... i did it because i read about it in an experiment done with houseplants (i know they're not the same, but lets be realistic, they're plants)... one was giving rainwater and the other Seltzer Water... the one with Seltzer Water grew healthier than the one with rainwater, because of the reasons i stated above.... plus plants including MJ don't really absorb many of the things we put in the water, it absorbs small amounts...supposedly the bubbles in seltzer helped them absorb them way better.... so i tried it... and truthfully... i couldn't tell.. so it didn't hurt the plants... but its not like i did an experiment comparing one plant to another... next time i'm gonna get a case of the Seltzer Water in cans because once you open one in a bottle, it goes flat after you try to use it later on... but its up to you if you wanna try it, nobody says you have to try it.... but the people who claim the plants can't take Seltzer Water or that its pointless, are not speaking from experience for from doing any research... its their opinion, not fact...