Abandon the product
Leaking package opened
Prevention: be careful
The product doesn't help at all in removing stains.
The package arrived already opened and appears to be used.
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"Didn’t really help at all. My tank still had that stuff on the side of it even after using it multiple times :/ Package also came already opened"
Try it at your won risk.
Highly effective for cleaning turtle tanks, recommended by many users.
Dr. Tim's Waste-Away cleans effectively, but caution with dose and tank size.
Aquarium cleaner works well and is highly recommended.