Just some small white or clear spots. Nothing odd other than what the one has done. I have not seen them rubbing anything. They aren't showing any signs of stress or appear sick in any way. I'm really not sure it's ICK, but I'm going to treat them anyway.
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70 gal fw planted community tank
156 w Tek-Light T-5 HO Lights
Eco-Complete + Flourite Substrate
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