i got an H. Magnifica over an week ago. It expanded its tentacles the first three days well. Then my clowns got ahold of it and now its looking like this. Is he doomed or just mad? The second picture was three days ago
If you can't treat it with antibiotics, then quarantine it away from your clowns in a separate small (10 to 20 gallon) tank with pristine water quality, bright light, and good random flow. Change 50% of the water daily and hope for the best.