- Joined
- Dec 5, 2024
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- 128
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- Hertfordshire
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- United Kingdom
I have had a look and it’s not clear but also doesn’t seem to have any tinge of any colour to it.If you have died rock.. I think you found your answer. As for why? Maybe pH or other reaction has allowed some of the dye to be released.
Again - the think to do would be examine a few cups of water from the tank in a clear glass to see if it is blue as well.