I just notice that none of my fish are eating, except for fish at the bottom are eating. What should I do? Am I feeding to much? This is in my 40 gallon tank, should I do a water change? my water is fine, no ammonia, Very little Nitrates, no Nitrites. My worker who works for me cleaned the top lid, with the lid on top of the tank. with soap, she said none of the soap got in the tank, she also has fish and she told me I had nothing to worry about. It has been 4 days after after she did this, would it take that long, or would it happen right away?
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