Most grocery stores have the machines outside that you put your own container under. They offer RO
in them. Give that a try. It's pretty cheap. Test the water before you mix it though. Make sure there isn't anything undesireable in it.
55 gal. reef. Coralife lunar lights 4 x 65, 120 lbs live rock. Remora skimmer, 3 power heads. 2 tank raise false percula,2 pajama cardinal,hermits, snails, Xenia, leathers, mushrooms, polyp frags, yellow sea cucumber, And last but not least - the miserable mantis.