09-23-2010, 07:00 PM
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Aquarium Gravel Stained
I have a question about my aquarium gravel. It seems to be stained or have some weird coloring on it and I have no idea what it is. My Aquarium water quality is good. I just tested it. Temperature is 78F. The aquarium is 5 gallons, so pretty small and I set it up Mid July. The gravel is lime green and has brownish stains in small groups all over the tank. Just noticed this a few days ago, was never there before.
Any idea what this is and how I can remove it.
I attached a picture to show what it looks like
Thanks for the help,