Buzz
Snails are unwelcome inhabitants in your aquarium. They or their eggs can infiltrate your tank by attaching to aquatic plants, decorations, or equipment that is transferred from one tank to another without proper cleaning, or through bags containing newly purchased fish or the fish net used for catching them. Sometimes, a single snail can lead to an overwhelming population. These soft-bodied creatures reproduce rapidly and, before long, will overrun your tank. While getting rid of snails may require some time and effort, it's definitely worth it for a snail-free aquarium.
Steps
Removing Snails from the Fish Tank
Avoid overfeeding the fish. Overfeeding can contribute to the rapid increase in snail populations. Try feeding your fish less (just enough for one feeding session) to see if it helps control the snail problem.
Use Chemical Snail Killers. Copper sulfate is the most commonly used chemical to kill snails while remaining safe for fish. If you decide to use this chemical, be sure to carefully follow the instructions on the bottle to avoid harming the fish. Often, snails will die in large numbers, which may result in contamination of the tank. In this case, you will need to spend time removing dead snails and adjusting the water to ensure the safety of both the fish and aquatic plants in the tank.
Set Snail Traps in the Tank. There are various types of snail traps available online or at aquarium stores. However, a very simple trap is placing a lettuce leaf into the tank, attaching the stem to the tank's edge, and leaving it overnight. In the morning, when you remove the lettuce, you’ll find the snails gathered on the underside. Repeating this over several nights will help you remove a large number of snails.
- You can also manually remove snails from the tank when you spot them. This method works best if there are only a few snails in the tank, but since most snails are nocturnal, this may not be highly effective.
- When they first hatch, baby snails are tiny and can climb up the sides of the tank. Use a small diameter tube, like an air pump hose, to suck them up. Move it around and remove these tiny creatures. It might take several attempts to clear them out, but you can suck up to 100 snails in a few minutes. Repeat the process over several hours.
Introduce Predators into the Tank. Scavenger fish are perfect for eating snails. For smaller tanks, try adding zebra danios or dwarf chain loaches. For larger tanks, pictus catfish or loaches will do a good job.
- Assassin snails will also eat other snails. These snails reproduce slowly, so they won’t become a nuisance.
Try Combining Multiple Solutions. There are various methods for dealing with this pest. Snails can multiply quickly in your tank, so this should be a priority task. You may need to try several approaches to completely get rid of snails in the aquarium.
Deep Clean the Aquarium. If the situation gets out of hand, or if you want to completely eliminate the problem, a thorough cleaning of the tank may be necessary. This involves removing everything from the tank, including gravel, decorations, and aquatic plants, draining the water, scrubbing everything clean, and drying it before refilling the tank and putting everything back in.
Preventing Snails
Carefully inspect everything before adding it to the tank. Preventing snails from entering your aquarium will save you time and help you avoid many problems. Always check aquatic plants and decorations to ensure there are no snails or eggs before introducing them to the tank.
Quarantine items before adding them to the tank. Quarantine aquatic plants by placing them in a separate tank. Leave them there for a few weeks, removing any snails you may find.
Soak aquarium decorations in a snail-killing solution before placing them in the tank. Soak plants in a snail-killing solution to remove snails and their eggs. Prepare a solution with 1 part bleach to 19 parts water, which is about ¾ cup of bleach for 4 liters of water. Soak the plants in this solution for 2-3 minutes, then remove them and rinse thoroughly under running water for 5 minutes.
- This method may be too harsh for some types of plants, so there’s no guarantee it won’t harm them.
- You can also soak plants in an aluminum sulfate and water solution. Mix 2-3 teaspoons of aluminum sulfate with 4 liters of water and stir until dissolved. Soak the plants for at least 2-3 hours, or up to 24 hours. After removing the plants from the solution, rinse them well before placing them in the aquarium.
Tips
- A few snails in the aquarium are not a problem. They are scavengers and can be beneficial in this regard.
- An invasive species of snail is the Malaysian trumpet snail. These snails burrow under the gravel in the aquarium and are mostly active at night. You may not notice the issue until their population grows so large that it appears the gravel is moving. Apple snails can also proliferate and overrun the aquarium.
- Snail larvae can serve as food for fish.
- Some suppliers offer aquatic plants guaranteed to be snail-free, so it's worth looking for these types when possible.
Warning
- Clown loaches can grow to a fairly large size. They are best suited for larger aquariums where they can help control the snail population.
