did rez change yesterday along with the 2 cabs (the normal Sunday duty), and all looked real good, roots coming along good and nice and white. Tonite I go and check on my lil bucket baby and root part that was dangling in water has a brown tint to it and almost slimy looking (didnt want to touch as roots still look on fragile side). So now I sit here and think :wtf: wtf?? If a small amount of light was getting into the buckey could this be a cause?? PH is running right around 5.8/6.0 and res temp is 68/73. I know temps can cause root rot but I dont believe I am even close to being high. Have 2 6" airstones that are bubbling there arse off so lack of O2 should not be a cause. What am I leaving out??