What are these on the glass?

I posted the same question yesterday but here is the picture 'tho not very clear.

 

looks like algae growing on the glass

 

They're white. If algae, good or bad and why aren't my snails eating them?

 

Pods. They are good

 

don't think they are pods
I have the same thing on my glass its algae starting to grow on my glass my snails don't clean it up either you have to do the dirty work with a glass scrubber pad or a mag float or something

 

Its snail eggs... the ncurtile snails i believe leave those.. i have them on my tank as well.. they each have like 5 embryos and will turn into a larva which fish love to eat before they can turn into snails. Just scrape them off or leave them its up to you.. but mine bug me as well

 

Without a clearer picture, you're not going to be able to get a definitive answer. If you're talking about the white specks on your glass, it could be anything from copepods to juvenile feather duster worms to snail eggs to baby snails to sponges...etc etc etc.

 

I have a few of those white specs on my back glass also, I had no clue what they were, I scraped a few off with my fingernail, guess they fell to the sand, will they hatch or whatever in the sand? If it is a snail or copepod?