For the long-term health of your fish, we recommend a fitness treatment with DR. BASSLEER BIOFISH FOOD FORTE every three to four weeks. Aside from the premium ingredients of DR. BASSLEER BIOFISH FOOD REGULAR, DR. BASSLEER BIOFISH FOOD FORTE also provides immune stimulators such as citrus fruit pulp and high-quality glucan. A fitness treatment with DR. BASSLEER BIOFISH FOOD FORTE is particularly helpful in stress situations.