New Tank

[rookie954]

:thinking: Hello everyone
I setup my tank bout 2 days ago and today I got some live sand and live rocks, I now realize that I have 3 guest if not more.
1st is the one in the picture, I believe that it is a bristle worm. Please correct me if I am wrong.
2nd is one so small that I could not cature it with my camera. It swims around the tank it is so small it looks like dust or dirt floating. At first I thought it was until I saw it actually swim, its movements remind me of that of a shrimp. I am hoping that it is a shrimp and not sea lice, I do not have fish yet in the tank so I will not know till then.
3rd seems to be another type of worm. it is attached to the glass and just dances and curls itself.
Could anyone please advise me of what I should do. Thanks in advance

 

[marineman]

some of these LR hitchhikers can be very harmful to your future fish and corals, i would get rid of them before any major problems occur and it will be somewhat easier now than later. Some people do a super hypersalinity treatment to get rid of these pests. research if you decide it is needed. Good luck

 

[rookie954]

Thanks waterfaller1 and MarineMan for all of your help. I did rid thank of the bristle worms that were present. I have not seen the eunicid polychaete, I don't know if I got rid of it in the process. I used the fresh water technique and they all came out and I discarded them. I did not see the eunicid polychaete come out.