Little bugs on my filters

poohnasty

New Member
Hello. I have a 55 gallon tank that I've had set up now for about 9 months. I recently went to change my filter cartridges and noticed that there were hundreds of little creatures. I have no clue what they are. They are very small and almost look like rolly polly's. Can anyone tell me what these little things are? and are they bad for the tank, and if so, how do I get rid of them? Thanks.
 
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