hey all - my pond is barely 1 year old, so still very much in its establishment phase. I've got loads of hornwort and other plants in it, but over the summer it was still overrun by string algae. Now that we're in september, the algae seems to be less of an issue, but it is teeming with freshwater shrimp - gammarus (i think!!). i see them on the edges and each plant pot has them - not like an infestation, but there clearly everywhere in the pond. I can't actually find any info about these guys - is it a good thing to have in the pond, or do they indicate anything problematic?