my flowerhorn has physical hole and line crease in head kok. It eats and swims very actively. I have tried the new life spectrum hex shield for 3.5 days and used some api general cure for 24 hours and have kept water very clean. I even use some seachem cichlid trace to replenish nutirents that may be removed by purigen. What is wrong? Will the hole and line crease fill/heal itself back up with time? How long does the hole take to heal? This problem started about two weeks ago. Flowerhorn is very active.