white spotty things everywhere

[Sir Pufferfish]

seem to be having a burst of white, spotty, hard things everywhere in my tank, approx 1-2mm each in size.
there on the glass, on plants, on my filter, everywhere !!
they dont seem to move or show a sign of life but started to appear a month ago.
The tanks been running for about 10 years and houses a GSP, Figure 8, few Mollies and a few Bumblebees which are all in good health.
It also houses about 12 Ruby/Olive Nerite snails which i'm guessing could be something to do with but not sure.
Does anyone have any idea what they could possibly be please ??
I try take a picture tonight.

Tank spec : 190L / salinity 1.006-1.008

Thanks

 

[Danyal]

they're olive nerite eggs, i get them all the time, don't worry about them as they probably won't hatch, i've never pulled it off and i've had my olive nerites everywhere between FW and SW(i liked to play w/ my salinity from time to time)