something living in tank

[falcon63]

i have what seem to be vary small white size of salt grains liveing on glass lots of them 2-3 hundred of them . enyone know what thay could be?

 

[john f]

Amphipods or copepods.
Please go out now and buy a good reef book.
The Modern Coral Reef Aquariums Vol 1-3 are great.
Then you will know the answers to most of the thousands of questions you will have in this Hobby.
John