my daughter has her betta in a 5 gallon bow front tank. He constantly swims past the filter intake and this morning I’ve noticed significant fin damage to his tail fin. What’s the best way to prevent this and will his fin repair over time? I’ve heard of people wrapping pantyhose around the intake. How exactly do you do that? Just wrap and use something to hold it in place? Will that also help to lessen the current from the filter? I’ve noticed that in certain parts of the tank the current is very strong and the betta has to really swim hard to not get pushed across the tank. Thanks in advance for your input.