Tonga Fighting ConchHow to Care for Tonga Fighting Conch written by Dave Burr Tonga Conchs are very useful in aquariums because eat detritus, or waste, and keep the sandbed stirred. Tonga Conchs will clean cyanobacteria, diatom algae, and hair algae from the sandbed. They are an important part of any reef aquarium. Tonga Conchs will also eat any excess food that the fish do not eat. Feeding: If no algae is present in the aquarium you may supplement the Tonga Fighting