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I have two angelfish that I have had for maybe 3 or 4 months. All of a sudden I notice that they have both turned blue. I did some research and found out about these blue Philippines. Can anyone help me identify if that is what these are? The light part on both fishes dorsal fins have a blue...

I apologize up front if this question has been answered already. There are almost 500 articles with hornwort as the subject. When I first planted my hornwort it seemed to start pollinating. Little dust stuck to everything. I took out my fancy fish tank cleaning mechanism (turkey baster) and...