Java Moss Going Black? Help!

[aibo210]

Hi

some of my java moss is going black dont have any water test kits but using a CO2 hagen system and lighting on 10 hours per day with 2 hour off period 22w 65l tank

 

[helterskelter]

You must be doing something rearly bad to kill java moss!!!!!

I've got it in dim lighting and thats still growing like stink.
Sadily i dont have a clue.