Deliver bacteria-busting medicine to your fish with ThomasLabs’ Fish Pen Forte Penicillin Antibacterial Fish Medication! This dissolving tablet contains Penicillin V Potassium, a popular antibiotic among fish fanciers. Bactericidal action works to control all gram-positive and many gram-negative bacteria that can plague your fishy friends—diseases such as fin and tail rot and Flexibacter infections are all easily controlled and cured with Fish Pen Forte. Plus, Fish Pen Forte is versatile enough to work on both tropical and freshwater tanks—perfect for multi-tank homes!
Thomas Labs Fish Pen Forte Penicillin Antibacterial Fish Medication, 500 mg, 100 count
Out of stock