Quote:
Originally posted by jpatrician
Walmart also sells RO water by the gallon. Green label, and marked drinking water.
(.58 per gallon)
If you cant find that they also sell distilled water as well.
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I don't think their green labled drinking water is RO water. I used it once in my fresh tank and it had one heck of a buffer in it.. had a heck of a time getting it down to 7.0.. also I believe the dkh was up but that is probably ok.
The ro machines in the stores use the local drinking water as a source so if you take your tds with you and check it before buying you should be able to tell the condition of the filter.