Sesame seeds appearing on the glass.

[Nashon]

These little things that look alot like white sesame seeds, even the same size, show up over night. They have a hard outer shell and soft inside. They scrape right off the glass but i get 20-100 each night. Im assuming its some sort of egg. I haven't seen anyone laying them but whoever it is is picky about placement. Its only on the glass or one particular rock in the middle. They've been appearing for 3 weeks or so now. I've left the ones on the rock alone to see what happens. The oldest ones turn green and just sit there. Any ideas?

 

[NaH2O]

What kind of snails do you have in the tank? Nerite eggs resemble sesame seeds

 

[Nashon]

Thanks! I looked up pics of them and they are almost identical. Should these be hatching at some point? I'd love to sell a bunch of snails but if i dont scrape them off they would cover the full 7ft of glass in about a month.

 

[NaH2O]

I'm not sure what the incubation period is for Nerites, but they may not have a high probability of survival. Here's a quote from Nerites: Bleeding Tooth, Zebras, Checkers, and More

Apparently the larval period and requirement for planktonic food limits the successful recruitment of nerite larvae. There may also be a special requirement that the egg capsules be exposed with the change of the tides, or rainfall and salinity change may be necessary for some species.

 

[snobanker]

Could they be little tube worms? Do they look like little "swirls"? I get those all the time.

 

[Nashon]

Nope, the pictures in the article Nikki posted look just like my spots and I just bought my nerites a few weeks before these appeared. Thanks for the help. If anyone has suggestions to raise them I am all ears.