If you remember I had previously made a posting on what size can copepod grow to. Well I am still a little concern. My copepod population has grown and they are getter bigger and more visible to the naked eye. I can see them crawling all over the substrate. And often I can see the substrate moving as the little critter go through it. Is like some insect crawling through the lawn. The question is, is this normal? They used to be like lice, but now are more like shrimps but darker in color.