I am having a problem with what I think is red slime algae. I will attempt to post a picture. I have been trying to get rid of it with water changes every week or so but with in a day or two after the cleaning it is back. What are some possible solutions to getting rid of it? Is there anything that will eat it? Should I shut off my lights? Is this a serious helth problem for my other tank inhabitants or just unsightly? Thank you in advance for your advice.