Yes it can.. I did some reading and found that it can contain copper zinc and silver as they are used for antibacterial.
Though it stated that these are treated and added to the mixture.
Not saying mine does or does not. Though I have a healthy tank
Probably not enough to cure ich so doesn't cause problem
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You wouldn't want to see my tank. I don't use fancy equipment and I am a noob
02-01-2016, 02:16 AM
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