I wasn't feeding the tank because the sewellia never ate anything but the algae so the snail numbers were not due to overfeeding. The sewellia were doing great at first - I had 2 batches of babies appear but in the past few weeks I've noticed the fish seem to be thinner and fry were dying. I started feeding dry Repashy which seemed to work well for the sewellia - but I fear also for the snails. I finally decided to break down the tank and move the sewellia to a new, longer tank. It's been 2 days and I just found a tiny ramshorn snail in the new tank. ARGH!
The only thing that moved from the old tank to the new was the sewellia but catching them was very challenging and I suspect a snail hitchhiked on a net or my hand. These snails never get bigger than 2-3 mm and start even smaller. I've never seen eggs - they must be microscopic.
I need to put something in the tank to kill snails. I've narrowed it down to Planaria Zero which is a Japanese product that contains betel nut or Seachem Cupramine which contains copper. Does anyone have any experience using either of these products with sewellia? I hate to put them at risk but they are not doing well with all the snails in the tank. Very very frustrating. Thank you for any help.
I would suggest not using any, but feeding a bit less
My options are to allow the snails to multiply in the new tank and wait for the sewellia to die off or to try a medication. Or get rid of the fish but I don't want to pass a problem on to another fish keeper.
You are right, it only takes one snail to hitch a ride, as you suspect perhaps got caught in the net when you caught a fish.
This is usually the safest way to eliminate snails, that is, by moving the fish to a new tank.
I wonder if a temporary stop in a quarantine tank would have helped- A tank with no decor, no place for the snails to hide. Treat net and Q-tank with snail killer. When you are sure snails are dead, then move fish,
Or even throw away the net.
Still will not keep all snails out of the tank. ANYTHING you add to the tank from another tank might carry baby snails.
Happy fish keeping!
I think the quarantine tank idea is a good one except it's so hard to catch the tiny fry. I'm committed to getting rid of these *#?! snails! And I guess moving the sewellia from one tank to another is hard but doable. I hope it's not too much stress for them.
I still have one tiny fry in the old tank which is drained down to 1" of water. I can't seem to get this wily little guy! Turkey baster, double nets, glass jar - he just flits away out of reach or squeezes through invisible openings. He's only 1/2" long. I hate to give up on him but I'm spending so much time on the tanks doing ridiculous things lately!
Thanks for the replies, any other suggestions are welcome!
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