Is it better to medicate the fish’s water or their food?
Medicated fish food is a little tricky to manage. Sick fish often won’t eat very much (or at all) because they don’t feel well. Also, it can be hard to monitor how much medicated food each fish is getting, so some fish may be consuming too much medicine while others are consuming too little. If you are only treating one fish that is still eating well, then medicated food might be a viable option. If you are treating multiple animals, we recommend medications that dissolve in the water and treat the whole tank so that we can ensure every animal gets the right concentration.
For more information on how to treat sick fish, read our full article here.