Sorry I failed to write
I want to breed beauty and the beast zoa.
But he is not grow that is looking healthy yet
When I check him frag,his tissue is covered with something like Leather and his tissue was peeling off the flag.
I understand the cause somehow
・Algae is covered with flag
・I used glue large quantity
・Stream is not enough
I have solved them. I changed water higher frequency than before. I removed algae.
Should I watch it quietly?
And his covering is Protecting himself?