Why are my Corals turning White???

[BRB]

Look like this pic?

Haven't seen one like that. It was white and looked like other common snails but like size of an ant

 

[BRB]

Here is what I would do..
Start changing water :)

Haha thank you, I do try to weekly to biweekly

 

[BRB]

Also
Are you injecting air?
I see a lot of microbial bubbles hinting at a bacteria problem

Skimmer in the sump?

 

[BRB]

Those arent bubbles I dont think. They look like spirnid worms or even sand.

Probably sand from siphon sand cleaner

 

[twilliard]

Skimmer in the sump?

If it's a bacteria it will produce o2 bubbles
Trying to eliminate if you are getting micro bubbles from equipment