I'd lose the bottled water and it's higher sodium content (which plants aren't crazy about) and either go with your tapwater or RO and CAL MAG.
Weedhound Reviewed by Weedhound on . Plant leaves are starting to turn brown!! the edges of my plant leaves are starting to turn brown. at first it was just one plant so I ignored it, but now all plants are starting to show some brown on the edges. my plants are kept in a small grow box. the grow box can get very humid at times, so twice a day I open the door to the grow box for a couple of minutes until the humidity goes down. Any idea what it could be? Rating: 5