30/04/2022
Controlling Ramshorns & Bladder snails in your aquarium.
Ramshorn and Bladder snails are both hermaphrodites and lay their eggs underneath the water on any surface they can find. Iâve found their jelly-like egg filled sacks on tank walls, gravel substrate, wood, resin, plants and even other snails shells.
As any two of these snails (same species) can breed, if your tank has plenty of food, these snails will soon multiply into the hundreds. Bladder snails are more prolific than Ramshorns, but that does not negate the fact that Ramshorns can overtake a tank if your not careful.
Both species will breed to the maximum capacity that their food will allow. If there is uneaten fish food lying around, algae or other food in excess in the tank, then more eggs will be laid.
To control numbers of these snail populations, a clean tank with the bare minimum of food waste should be kept. Also, removing any egg sack as you find them will reduce and control the amount in the tank as well. A very handy tip for this, is a fish that will eat these egg sacks with relish. I have personally had great success with Goldfish, they slurp them up like jelly and will hunt out every last egg sack in the entire tank (though make sure, if it is a tropical tank, that there is no fish in that tank the Goldfish will eat as well (when I get a snail explosion, I remove everyone from the tank, turn the heater off, and then get my biggest couple of Goldfish from my Goldfish tank and leave them for a few days to eat âeverythingâ)). I have heard that Gouramiâs also love to snack on eggs as well.
For more mature snail explosions, either pick each snail out by hand or a larger Goldfish should be used. Remove every animal you wish to keep, then put a large (10cm or more Goldfish in and they will eat all the snails over a week or two, though they wonât eat snails that wonât fit in their mouths).
The other option is to remove snails manually. DO NOT crush snails in the tank and leave them, this just gives surviving snails more to eat, which means more eggs, which means even more snails. Reach in and pick them off, or place a finger on them and slide up the tank wall and theyâll slip right off. This might take a while to do and you will have to check your tank every day for more snails, but eventually you will either get rid of them completely or control their numbers.
The last solution is to dose your tank with a snail medication that contains copper to get rid of unwanted snails. Be aware that this will affect and kill ANY snail, shrimp or invertebrate in your tank, and that it will linger for a long time as well.
Donât hesitate to contact us if needed, and good luck in your hobby!