My 5 gallon tank.

I have not studied the subject very much, but it refers to the exchange of gases in the tank, it's possible that the plastic cover interferes with that.
 
Y? It been recommended to me by I think WYite ?‍♀️

NoahLikesFish recommended it. I don't even think I agreed as a short term solution. You really do need to find something better for the long term.

WYite
 
There is a bubble filter, just make a couple of small holes in the wrap and it's fine. When the wrap tears eventually you cut a new piece.
 
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I think you have a very creative aquarium, but there are not many plants in it. I would add more if I were you. But I definitely love the skull in the aquarium. Great idea.
 
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