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What is this

382 views 1 reply 2 participants last post by  Mo 
#1 ·

Does any body no what the greyish stuff is on the stones is it from the black gravel? I i do regular water changes sucking it all up and it always floats back on my stones?
 
#2 ·
It could just be fungus. I get weird growths like that on my decorations sometimes too. I havnt found out what it is but it doesn't harm the fish so I just clean it off and leave it there, lol. I hope someone can tell you what it is so I can find out too
 
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