Assassin snail invasion

I’m having a baby assassins snail problem! About a year ago I placed three assassins nails in my 40 gallon tank to get rid of some ponds nails that came with live plants. They took care of the problem and I removed them and place them in another tank. In the 40 gallon tank I have a very large mystery snail that I plan to keep and a handful of babies left that are being given away. The problem is that a year later baby assassinsnails nails keep showing up in my tank and I quickly remove them when I see them. I was very sad to see that my large mystery snail was dead this morning with a tiny assassins nail just inside her shell. Is there a way to keep the mystery snails but remove the assassins nails without completely changing all the gravel in the tank. I feel like that’s my only option.

 

I'm sorry but you're on a looser here, you can't use meds without killing the other, the assissan only killed the mystery because of lack of food, assissan eggs are laid one at a time but as you've found out over time they multiply I found they come to the surface about every 6 weeks to breed

 

I am slowly getting all the assassins out of my 55 gallon tank. Fortunately I have sand instead of gravel so easier to see them and was easier to sift through it to find all the adults. I removed each piece of decor one piece at a time to check for snails and eggs. I keep thinking I've removed all of them and then glance over there and see another little one crawling up the glass. I just pick them out as I see them. I feel sure I've removed all of the ones old/big enough to breed. Hopefully one day all the babies will be removed and during that time none of them will hurt Miss Sneller, my big mystery snail.

I did stop adding ramshorn snails for them so cut back on their food supply. I think that slowed down on the breeding. Removing an replacing the gravel may be the only way you will ever get rid of all of them in your tank. That and checking everything in the tank for eggs.

 

This was a while ago called it
The assissans march
In a 10g tank one evening the front of the glass started to get pitted and when I looked closer this is what I found 100s of then coming out of the substrate, it was a case of siphoning them out there was no more I could do

 

I’m surprised that they are so small they’re barely visible yet are able to keep breeding. I always pick them out and place them in a smaller tank but I think I’m fighting a never ending battle and such a teeny tiny snail being able to kill my huge mystery snail was the last straw. I’ve taken all the pieces out and scrubbed everything top to bottom even all of the gravel so I think I’m going to just change it all out.

 

I just noticed a 2nd baby assssin in my 20 gallon long. But I have so many Ramshorns, it's okay for now.

I really like them, they're so odd looking. I've never seen them after my mystery snails. the trap door on their bottom is a pretty good defense mechanism, The only time I've seen an issue on their footer was when they were starting to die and their inside had shrunk because of it. The hard shell bottom disk was weakened and they could no longer keep the 'trap door' effect going.

 

This assissan ate my nerite after polishing off all the other snails itd food source must of run out so it took drastic measures, up until then they lived quite happily together
The other is an assissan egg this is blown up quite a bit but I found they like to lay eggs along the seems of the tank

 

I have a black racer nerite in my 20 gallon long. I saw both assassins last night and moved them to the 38 gallon.

I like the whelks, but I want my nerite safe. I've had him 2 years and he's a good little snail.

I put any baby ramshorns that get vacuumed out back into my 38, so a food source is always there.

 

A little hint on how to attract assassin snails to a specific place for easier removal. Put some freeze dried blood worms in some fine netting and wedge it on the bottom of the tank. The assassins will come out to get a bite. If you have corys though they will come running first.

 

Sorry I had to.