Plant leaves are starting to turn brown!!

[Revanche21]

I double and triplecheck everything I do, watch ph like a hawk, feed good quality nutes and.....like Revanche says......keep my ph from 5.6-6.0.

My plants look like this.

Have a good one.

look at you showing off lolimp:

Revanche21 Reviewed by Revanche21 on 12-05-2008. 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