- Joined
- Aug 13, 2025
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- 2
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- 7
- Location
- Alberta
- What state or country do you live in
- Canada
Hey everyone,
First off, huge thanks for all the advice on my previous thread! I've taken it to heart and decided to do a full reset of my aquarium. I've removed all the dry rock and started the curing process with a bleach soak 1:10.
It's been over 24 hours now, and while a lot of stuff has come off, there's still some residue stuck to the rocks. I'm hoping someone can help me identify what these things are. Are they just stubborn and need more time in the bleach, or is bleach not going to cut it?
More importantly, if they don't come off completely, will they cause problems in my aquarium, like decomposing and messing with my water quality? Any advice would be greatly appreciated!

First off, huge thanks for all the advice on my previous thread! I've taken it to heart and decided to do a full reset of my aquarium. I've removed all the dry rock and started the curing process with a bleach soak 1:10.
It's been over 24 hours now, and while a lot of stuff has come off, there's still some residue stuck to the rocks. I'm hoping someone can help me identify what these things are. Are they just stubborn and need more time in the bleach, or is bleach not going to cut it?
More importantly, if they don't come off completely, will they cause problems in my aquarium, like decomposing and messing with my water quality? Any advice would be greatly appreciated!
