What are the dangers to watch for when cleaning a betta fish tank

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What chemicals should I avoid when cleaning a fish tank? - Quora

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Is it safe to drain a 3 gallon betta fish tank completely to clean and will it harm the fish to do this? - Quora

this is one of my family's members betta tank , what should i do first ? i was thinking about cleaning it and having live plants in there and i'm pretty sure

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What chemicals should I avoid when cleaning a fish tank? - Quora

What are the risks of moving an aquarium with the water and fish inside of it while cleaning/moving it, even if temporarily empty (tanks are heavy)? - Quora

How to Clean a Betta Fish Tank