I have a clove of garlic in my fridge that's a few months old, but it doesn't look bad or anything... Is it ok to use?
Fresh garlic should not be placed in the fridge. According to the information in the link above, and information from Chef, it can become moldy and soft. If it is either, toss it out.
Chef always keeps his fresh garlic in the mesh bag it comes in and hangs it on a hook in a cool dry place.
Would you eat the garlic you have stored in your fridge? Too, if you have ask if it's good or not, I would just toss it. If in doubt, throw it out. I would hate for you or your fish to get sick!
I soak the fish food in garlic, and then put all the water I soaked it in right back into the tank. I have MTS-a-plenty lol