It's common in newer tanks. Biological filter is still developing so fish waste isn't getting properly broken down. Try less feeding and do a couple of water changes. Oh and syphon that spot or any other spots like that out before it spreads.
It's common in newer tanks. Biological filter is still developing so fish waste isn't getting properly broken down. Try less feeding and do a couple of water changes. Oh and syphon that spot or any other spots like that out before it spreads.
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