Getting rid of the "Freshwater Limpet - Acroloxus lacustris"? - Page 2 - The Planted Tank Forum
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post #16 of 19 (permalink) Old 02-14-2013, 08:23 PM Thread Starter
Planted Tank Obsessed
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Join Date: Sep 2012
Location: California
Posts: 305
Ugh. This is so irritating.
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post #17 of 19 (permalink) Old 08-29-2016, 12:50 PM
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Join Date: Mar 2014
Location: Wayne, Maine
Posts: 11
Resurrecting this old thread because I have something new to add to it and it may help folks in the future with this issue.

I too, had this problem and googled everything I could find to try and get rid of them... It would have been fine if it was just a couple of them, but their population exploded and they covered everything. Squishing was to no avail. There were just too many. It looked like my tank had a bad case of acne. As it was only a 40G Breeder, loaches were out of the question.

I tried everything I could think of, *outside* of the tank. I set up another 10G and put a sample of all the plants I had in my main tank in it and nucked that tank with everything I could think of... First I simply tried Ace Hardware Ammonia at about 1.5ppm. Kept it at that lever for a week and a half. THEY LIVED THROUGH IT!!!!!

Plan #2: Tetra Algaecide. For 3 weeks. They just laughed. I think I even saw one waving a tiny limpet middle finger at me...

Plan #3: Copper. Therapeutic levels for 2 weeks. Die you little bast@&%ds! Die! Die! Die!!!

Plan #4: No Planaria. Made the water totally gross. They just threw a party. And didn't invite me. I was so depressed.

Plan #5: Desperation. Ammonia at 1.5 ppm, copper at therapeutic levels and Tetra Algaecide all at the same time - for a full month. Finally!!!! Success!!! Death to Limpets!! Death to them all!!!! I threw a party... and I didn't invite any limpets.

But yeah, okay. So I probably couldn't do that to my main tank. So I decided to use the 'sterilized' plants from the 10G test tank, bleach everything else, new substrate and start again. Sigh.

But I was saving up for a rimless, and figured I'd have it in a month or two, so I put it off. While I was waiting, I added a 6 pack of cute little otos. A week later I happened to walk by the tank - and stopped dead in my tracks. OMG - I could see through the glass.... Where were all the limpets???

I love my little otos ♪♫♪♫ I love my little otos ♫♪♫♪ I love my little otos ♪♫♪♫!!!!! They're acting just like tiny little loaches, and the limpets seem to be perfectly oto-sized! I still see a limpet here and there, and when I do I squish. But I so rarely see them anymore that I'm fine with it.

Did I mention that I love my little otos?

Hope this helps someone else!


low tech planted 5 gallon with 1 Betta Fish
low tech planted 40 gallon breeder with 2 Goldies
High tech planted 15 gallon with 1 Betta Fish, 6 Panda Cories and Bloody Mary Shrimp
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post #18 of 19 (permalink) Old 08-29-2016, 03:58 PM
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Join Date: Sep 2014
Location: Virginia, USA
Posts: 1,301
I am glad to hear it. My ten-gallon betta tank is overrun with limpets. I had to move my oto out a while back because the betta was threatening him. However, right now the betta is in hospital tank- so... maybe I can move the oto back in temporarily and see if he'll eat up most of the limpets?

I'm going to try.

10 gal planted- male plakat betta, horned nerite snail, malaysian trumpet snails
38 gal planted- cherry barbs, kuhli loaches, serpae tetra, amano shrimps, oto catfish, nerites, mts
20H "Window Tank"- pair of swordtails, some mts
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post #19 of 19 (permalink) Old 09-01-2016, 01:31 AM
Planted Tank Obsessed
Join Date: May 2012
Location: Irvine CA
Posts: 357
No idea otos ate limpets. Aren't they the ONLY certified shrimp safe fish?

Limpets piggy backed on some plants into my tank a few yeras ago. I took everything out of the tank. Soaked all the plants and rocks in alum for a day or so then in potassium permanganate for about a minute (then dilute with hydrogen peroxide). Rinsed them clean and return to tank.

The substrate is replaced with new one.

No limpets ever since. I do alum soak every time before introducing new plants in my tank now.

My journals: 60F - 60P - Aquatop Cube - 22G Long
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