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Discussion Starter · #1 ·
I have like "oil slicks" on the top of my water.
I just did a 75% water change about an hour ago and syphoned the rocks and its already back.



The tank is a 5 gallon, divided, tank. Gravel, fllter (just changed the media 2 days ago), and heater....

Inhabitants: Male CT, Female (VT I think), and a snail...

amonia, nitrate, nitrite, and hardness all test fine. This tank did not do this with just a snail in it, so is that from the food?
 

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Discussion Starter · #3 ·
yes, it has a clear acrylic lid.
 
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