#bugs

I was cleaning my tank when I saw little pieces of sand where clinging to the tank? Earlier there was this white film (I don't have a picture) laying on the sand but I wasn't thinking anything of it and sucked it up. It looked like a foggy piece of film. Then I saw that they were MOVING. They...

What are these Little Critters that are appearing more and more in my tank? Are they a pest or good ? If a pest what if best way to remove them

I have had the frog spawn and the torch for 2-3 weeks. I have dipped them 4 times now in coral RX and still keep finding theses lil bugs crawling on them. Is this something I should be concerned.