I have had a beautiful male betta named Avenir for about a month. He has been very healthy, vibrant and active. His tank mate is a black mystery snail named Myriad, who has not been nearly as active. I realized that my snail was not getting enough to eat, so I started feeding it algae flakes. My problem is that Avenir appears to also be eating the algae flakes, and as a result has become very bloated. After doing some research and calling the pet store, i have determined that the best course of action was to remove Avenir and place him in a separate container, and fast him until the bloating goes down. I am already seeing some slight improvement. My question is, how can i make sure my snail is getting enough nutrients without allowing Avenir to become overfed?