Bryan, it sounds like you are describing red planaria, red flatworms, etc. These are quite a common pest that can reach plague levels. Post a picture if you can or head on over to Melev's and check out the little villians:
http://www.melevsreef.com/id/tbs/flatworms.jpg
thanks for lookin out ...but mine are not flatworms.....i have seen maybe 3 at one time ...for the last 6 months....none of the pics match....but i do need to get digi cam back
thanks
bryan