They start out a whitish color before they turn a golden brown.....
If you continue to see decay on the substrate or dying leaves on the plants, keep getting them out of there when you are doing your water changes
Thank you - what info do you need from me to help me?
aquariumplants.com has it.
I never bother to turn off filters either. Actually, the currents they produce help transfer the food around the tank to the different levels of feeding.