Just a little warning for those buying RO water at there local aquatics store ,i picked some up yesterday and and checked that this was pure RO ,without salt which they said it was ,when i got it home i nearly tipped it straight into my water but but thought i would check it ,it was reading 3300 on the meter ,yep it had salt in !
Luckily enough no harm done,changed it today so no problem , but could of killed my plants !