Been a long while since I've posted here mainly due to restricted internet access and it is good to be back. I have a problem lately with my two full grown angelfish, there is algae stuck in their slime coats from when I scraped it last. I figured it would go away at first but its been a good two weeks now and it's still there. Has anyone ever had this happen? All other fish in the tank are fine and water Parameters are all good when I check. I did treat with mela fix and Pima fix to see if it would help any...which it hasn't. Any ideas?