got a pic of what you're describing?
Sorry I don't, I'll try and get one this evening.
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got a pic of what you're describing?

The active ingredient in ZS2 is copper. In mild and diluted form, this will cause the zoozanthellae to be expelled from corals. I can also attest that it works very well and should NOT be overdosed. New dosages should try 1/2 to 3/4. It's even recommended on the bottle label to go easy w/ this stuff.
Those with ZS2 and a Cu test kit can verify the copper content in this stuff. When diluted ZS2 is tested using a copper test kit, the readings are still off the charts.
When poured into the KZ white cap, you can see the blue tint in the ZS2.
HTH![]()
Small update, my corals are recovering quickly from the 'normal dose' (which is basically an overdose).
An overdose is dosing more than 1ml per 25G of your net water volume.

