Healthy tank sign. Likely a mixture of copepods/amphipods. I also see Acoel flatworms as well. These flatworms are harmless but if the population gets out of control they can irritate coral. For now just leave it all be. Let the ecosystem balance itself out. Enjoy the cycle!
Thanks for the input reefers! Those little white things don’t actually move. I thought they were were related to the pineapple sponge. They are just smaller. Apparently they love the glass….Actually, I don’t see any acoel flatworms.