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My Nerite Snails having a bad time

Discussion in 'Inverts' started by jonny_ftm, May 2, 2009.

  1. jonny_ftm

    jonny_ftm Guru Class Expert

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    Hi,

    I have no way to keep my Nerite snails. I kept 2 of them for about 5 months. Than, I lost two in the same day. I first thought it was my 50% first water change as they died 2 days later. Than, I also saw I have a CO2 problem (CO2 test on yellow) and also figured my GH was too low (that is GH 3)

    I increased the GH now to 7, my CO2 is well dosed, and I introduced a new pair of those lovely snails. I made my water change before I acclimate them. And yes, I acclimated them, even if I never did with snails.

    48h later, they stopped moving, and now they're dead.

    Anyone can help me understand why I can't keep them anymore? PH is near 6.6-6.8 I think, NO3 is kept near 10ppm, of course no NO2. My aquarium is doing very well, and my fish too (no diseases or deaths since more than 6 months)

    Could it be the low PH? My Tateurndina Ocellicauda that all the time try to eat their extremities? Having no algae in aquarium (but shouldn't explain a death in 48h)? I really like those snails and would like to keep them, or at least understand why, suddenly, they began to die my aquarium.

    Many thnaks for any one sharing such an expierience
     
  2. tedr108

    tedr108 Lifetime Charter Member
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    The biggest problem for nerites is low GH from my experience. It seems that GH boosters do not necessarily make the water habitable for nerites, I am not sure why. My nerites do great in my tap water (12-20GH, depending on time of year), but when I was using RO and building up the GH with Equilibrium ... they didn't last very long.

    Nothing else you listed would be a problem in my opinion.
     
  3. jonny_ftm

    jonny_ftm Guru Class Expert

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    Oh, very sad indeed :-(

    They begun dying with using distilled water and lowering the GH indeed. Now, they don't make it in my tank for more than 48h. I still have one alive but it doesn't move at all nor stick at a support for a week. I think it will die in the next days, I'll just keep monitoring it

    The Horned Nerite (Clithon corona) I introduced the same day as my last 2 Nerite are still alive and moving, but they move very slowly and sometimes don't move for many days. But they still stick at their support.

    Do you think acclimating them longer to the soft water can help before I introduce them? Anyone succeding with Nerite and the use of distilled water?
     
  4. Tug

    Tug Lifetime Charter Member
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    Distilled water is a waist of plastic.

    If you can find a water quality report for your area you might not need distilled water or to try and lower the GH.
     
    #4 Tug, May 4, 2009
    Last edited by a moderator: Jan 30, 2010
  5. detlef

    detlef Subscriber

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    Sorry to hear some nerites died on you........

    First though there seem to be many different species available in your LFS which might explain why some make it and others don't.

    My experience concerning nerites is very limited to begin with...it seems that in soft water some species might develop holes in their shells do not grow much and even die soon (expected life-span is said to be around 12 years!). IME depending on species they should survive freshwater a year at least though. Let me add that nerites are so good at cleaning that potentially their home will be devoid of algae resulting in both hungry and weak snails. Therefore, if the tank does not support their well being any more due to lack of algae they should be transferred to a greener location.

    Also, according to what I've read many species are much better adapted to brackish or saltwater surroundings and should therefore preferably be kept in higher salinities. It seems that the livetime of most species is very terminated in freshwater!

    I'm not sure but I suspect it might be a general mistake selling nerites to the fresh water hobbyist.

    I'm interested to hear opinions of the more experienced of course!



    Best regards,
    Detlef
     
  6. ibnozn

    ibnozn Subscriber

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    I have olive nerites in two tanks. One runs 7.5 ph, the other 8.0+ w/o gas. They do much better in the harder water for me, their shells are much less pitted. They need sufficient hardness to keep their shells healthy, especially with all the CO2 we dose.
     
  7. jonny_ftm

    jonny_ftm Guru Class Expert

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    Many thanks for all your feedback. The problem is that they no longer make it above 24-48h in my tank. The 2 first stayed for 6 months, and when I begun distilled, they died one day after a water change. The next 2 I put, did it for 48h before stopping to move and than die (one of them is still alive, but doesn't move at all)

    I add Mg and Ca now and my GH is at 7-8, but PH is below 7

    Guess what: GH 14 and KH 17 :rolleyes:
     
  8. Tug

    Tug Lifetime Charter Member
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    Really?

    Eating themselves out of house and home.
     
    #8 Tug, May 5, 2009
    Last edited by a moderator: Jan 30, 2010
  9. jonny_ftm

    jonny_ftm Guru Class Expert

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    I moved to a new city. They were fine with my previous tap water: GH 10 and KH 6

    Now, where I live, is a region with known very hard water and extremely high KH (even with the precise Salifert test). I even didn't give it a try when I moved. I took with me some barrels of my old tap water and made a progressive move to a mix of distilled-tap water from my new location.

    I could try to increase the amount of tap water I mix, but I always end up with too high KH for a given GH. Probably excess of sodium carbonate explaining this KH > GH. High carbonate is not good for plants and my fish
     
  10. jonny_ftm

    jonny_ftm Guru Class Expert

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    Today, the remaining Nerite that was no longer moving since many days is dead for real. The body no longer reacts to the touch at all and remains open :(

    Also, I just lost one of my 5 Clithon Corona snails (Horned Nerite) :(
    The other 4 still move, but really very very slowly. They were very active in the shop and on the first 48h in my tank

    Also, my Trumpet Snails (Malayan Livebearing) could never do it for more than few days.

    The only snails that are still doing it are the Pond Snails (Lymnaeidae), even if their population decreased drastically in the last weeks

    Anyone using EI, distilled water, low GH and KH, acidic PH or other such things and having same bad expierience with keeping snails?

    I'm really disappointed not being able to keep them anymore with my fish. Also, my Amano shrimps all died. Looks like my tank is now damned with invertebra :confused:

    Please any help is appreciated
     
  11. jonny_ftm

    jonny_ftm Guru Class Expert

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    I just read this on Peacock Goby (Tateurndina ocellicauda) fish

    Fishkeeping - Caresheets - Peacock Goby (Peacock Gudgeon, Eye-spot Sleeper) - Tateurndina ocellicauda
    I also have noticed this behaviour and even took a photo few weeks ago when my Nerite was still alive:

    [​IMG]

    The Goby stays in a fixed position waiting for the snail to get out of its shell. There, it falls on the snail trying to get a piece of it :-(
    But, would it explain the death of my Trumpet Snails?

    Anyone having some expierience with keeping this fish with snails?
     
  12. jonny_ftm

    jonny_ftm Guru Class Expert

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    Hi,

    I just read in a french forum that these fish can even extract the pond snails from their shells. They are also reported by some forum members to eat small snails with their shell :confused:

    Forum Link

    I'm getting more and more convinced that this explains all the empty shells I see in my tank. I have these fish since about 8 months and their appetite to my snails begun only a few weeks ago, but hey, they also increased in size and became adults

    If anyone can share/confirm this expierience, let me know
     
  13. SueNH

    SueNH Junior Poster

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    Check for metals? Lead, copper?

    Why do you want to use distilled water in a snail tank? I add calcium and magnesium to my very soft well water. Couldn't keep a snail without it. I also have to feed them. While there is enough food for the common pond snails the others go hungry in our pretty planted tanks. I even add a bit of crushed oyster shell every once and while and the snails actually rasp it down eating the calcium.

    Just blanched a small broccoli leaf this morning and the snails a chowing down. I also see some mts have risen from their daytime nap to feed on a missed shrimp pellet. Some rams and pond snails are heading in that direction.
     
  14. jonny_ftm

    jonny_ftm Guru Class Expert

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    If you read through the whole topic, you'll see that:
    - I have to use distilled because of my tap KH
    - I add Mg and Ca for a GH of 6-8
    - My snails say bye bye in 48h usually, so not by hunger
    - I change 50% weekly, with a 17% tap and 83% distilled, so doubt any toxic accumulation


    Well, to sort it out: I'll try to introduce new Nerite snails, but isolate them in a breeding box inside main aquarium. If the peacock are the criminals, the snails should survive this time.

    Let's see and I'll feed back with the results
     
  15. jonny_ftm

    jonny_ftm Guru Class Expert

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    Tonight, I looked better at the still moving Clithon Corona snails (Horned Nerite) I have.

    I could take these photos:

    [​IMG]

    [​IMG]

    The pointed white spots are the snail tentacles, or rather what remains from them: just some white floating tissue :(


    So, it really seems they're missing some parts, and my Gudgeons are strongly suspected to eradicate my inverts population, even the pond snails

    Sad, I love those fishes as much as the Nerite :-(

    Anyhow, anyone having such an expierience with this fish?
     
  16. shoggoth43

    shoggoth43 Lifetime Charter Member
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    Copper poisoning from the pipes/tapwater maybe?

    I know my tapwater was pretty much a killer for my apple snails even though the fish never seemed to mind much. I now use SeaChem's Prime whenever I do water changes. Unfortunately the tapwater never seemed to harm the pond snails I wanted gone. Go figure....

    -
    S


    [EDIT] - Looks like I missed the second page on this when I did my post....
     
  17. jonny_ftm

    jonny_ftm Guru Class Expert

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    No copper detected by salifert test
    The Red Cherry are doing fine in the external canister, so same water, just out of the main tank
    It wouldn't explain the missing tentacles on all the Nerite and Clithon Corona

    When I can, I'll introduce a Nerite and isolate it in a breeding compartment. If it survives, I'll move it in the tank to see how long it lasts. At leat I'll be sure that the water is ok that way

    I'll give a feedback when I do it
     
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