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Hello,

I've had a top fin 5 gallon aquarium for 6 months, and I noticed small, light brown tear shapes, about an 8th of an inch in size, embedded in the glass on the bottom of the aquarium.

I bought a new top fin 5 gallon and saw one of these light brown tear shapes. Each shape appears to have a tiny bubble on top of it. I've researched on the net and found nothing that would identify these. I'm wondering if these tear shapes could lead to leaks or breaks in the glass or if they are harmless. Does anyone know what these are and if they could lead to leakage or breaks in the aquariums?
 
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