My sink is clogged by black gunk and it only happens to the sink I mostly use. Why does this happen and how do I remove it? - Quora
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Wtf is in my pipes? Unclogging a bathroom sink, took apart the drain below the sink and a bunch of black slime came out in thick chunks : r/Plumbing
How to clean years of accumulated gunk from kitchen sink piping | Terry Love Plumbing Advice & Remodel DIY & Professional Forum
![bathroom - What is this black stuff that appeared on my drain after cleaning with a bleach-based cleaner and how do I clean it? - Home Improvement Stack Exchange bathroom - What is this black stuff that appeared on my drain after cleaning with a bleach-based cleaner and how do I clean it? - Home Improvement Stack Exchange](https://i.stack.imgur.com/Aabqe.jpg)
bathroom - What is this black stuff that appeared on my drain after cleaning with a bleach-based cleaner and how do I clean it? - Home Improvement Stack Exchange
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