You say you have kept the Nerites for year's now without issues, but later you say you have never been able to get them to eat anything.
This suggests either you have attempted to keep them for year's without much success over long haul,or the snail's were/are finding their primary food source which is algae in you previous tank (s) but not finding what they need in present tank.
Many of the Nerites it seems, need a bit of salinity along with Calcium and Magnesium for shell development, and I might experiment with Marine salt at maybe 1/4 of suggested % for salt water tanks.(provides calcium and magnesium +salt)
If you have a Mature tank of some month's old, with some algae and or biofilm readily available,along with wood and or stones where more biofilm or algae along with infusoria also tend's to exist,then Nerites could very well be finding food's despite you not seeing them take other food's with algae content?
I do not think soft R/O water for the Nerites is working well now from what has been posted and would want to see if more basic water and a bit of salt might not reveal better result's over long haul.
Many folk's claim to keep this species or that species of fish or invert's in wildly varying water but maybe not for long despite
what they say.
P.S. Nerites not particularly long lived but if you can get them to produce young ,or purchase younger specimen's,then perhaps you can enjoy them longer.
I would want to hedge my bet by providing repeatable good result's rather than sketchy to maybe.
If very different now,,
Maybe you just need to go back to what has worked better in the past?
Okay lots of confusion here, I end up breaking down tanks after a year and giving snails away to friends, etc. Within a year span or so the snail seem
to do well but within that same span lately they are developing shell problems. The only connection I am making between shell problems and my different setups is that driftwood seems to help their shells, they seem to literally eat the wood. My current tank with shell problems is an "Iwagumi" with no wood, just a stone hardscape.
Regarding your salt suggestion I would not even consider that with my fully established HC carpet I am not taking any chances. However I will do a calcium test on my tank and see what the readings are, I have nothing to read magnesium but I know the Flourish I add has both calcium and magnesium traces.
Biofilm and algae are certainly present for food, I do not see them eating the biofilm ring at the surface at all but they literally clean the glass every night I never have to clean my glass. Even in tanks with wood they still kept the glass clean, I swear they love algae on smooth surfaces because they do not really clean my rough rocks.
I did read that their aquarium lifespan is not greater than 2 years but in the wild they can live up to a decade so something is wrong with that to me and I do purchase younger Nerites due to this reason. I may have to hide some wood out of sight for them to eat because the Zucchini even frozen just falls apart and makes a mess, they do not seem attracted to it and the shrimp just end up making a mess with it then it becomes impossible to pick up. Some claim theirs eat bottom feeder tablets but I have never had any success with it.
Originally Posted by fermentedhiker
When you say you were never really able to get them to eat, do you mean that in the past they slowly starved or that you just never observed them eating things you offered them to supplement their diet? Nerites are nocturnal feeders for the most part so during the day you won't see a lot of action. Also if the tank has sufficient biofilm for their needs they wouldn't necessarily accept your alternate food source.
What is your PH? Are you running CO2?
The pointy tip at the end would be the oldest growth and once damaged isn't likely to be repaired, at least on the outside of the shell.
I'm not sure what roadmaster is referring to with regard to short life span. I've had both fancy nerites and olive ones for years so I would say they last at least as long as your average tetra. Also Nerite eggs don't hatch in freshwater so you can't have nerite babies develop
I went through a period where I offered them everything under the sun and I never observed them eating anything, I even gave them homemade "snail jello" and they favored the algae on the glass instead. If you drop one into a tank you can not even see through the glass it will clear the glass overnight I have seen it done before which makes me think they are always being starved. My glass may stay clear but under close examination the glass has different track patterns every day. When you say biofilm I do occasionally feed my shrimp "Bacter AE" so it is certainly present in my tank.
I am not running CO2 but I use Excel. ahh pH this is something I apparently always thought I was above testing and I waited to post this so I could collect some data on my pH. I seem to have a pH swing of 0.3 with an average of 7.5-7.6 I tested right before the lights went out for the night and I got 7.7 then tests right before the lights come on in the morning showed 7.4 so that seems neutral. However tests on my RODI top off water show it @ 6.0-6.4 and I think that may be a problem in itself but not related to the stability of my snails?
The fish I keep should be kept at a max of 7.5, the shrimp 7.4, and Nerites 6.5-8.2? Seems like 7.0 would be a good tank target right??
I did read that the tip will not repair itself and I always thought the tip was the newest growth, a common fix seems to be....superglue.
2 yrs old is expected lifespan in the aquarium according to most literature or research I could find when I once tried my hand at keeping them in 12 dgh with pH around 7.6 and temps around 76 degree's F.
I had no issues with shell erosion or development,but they clearly showed preference to old wood pieces and existing algae over prepared food's I offered.(once algae was gone)
I was drawn to this topic or thread for I am contemplating setting up a tank for Plecos I raise and Hillstream loaches along with some nerites later this summer.
Am near expert at growing all manner of algae(when needed), so maybe shall see if previous snails died of old age ,or lack of primary food.
Funny you say this, I found the same results. They seem to live longer in cooler water, but I keep my tanks @ 78F. I will choose Nerites over Plecos for keeping my glass clean any day, unless its a larger tank.