About a week ago, my flowerhorn hit his head against the side of the tank, and it was mostly healed up, but today he hit his head again, and there is kind of a white mark where he hit it. Why do you think he keeps hitting his head? Will he be OK?
I've kept them with and without sand and they seem to love it. They always brighten up considerably with white sand.There currently aren't any decorations, it's a bare bottom tank, but I'm planning on adding some sand along with a terra cotta pot for him to hide in.
Give it some time. As long as no secondary infection sets in it should be totally fine. I'd wait until it heals though to add sand just in case.His head hasn't healed up yet, I can still see the spot where he hit it. It almost looks like a there is a slight indentation where he hit it, but I think it's starting to heal up. I haven't added the sand yet.