copied from link
Conclusion:
In many reef tanks, some of the most abundant animals are these small snails that often appear to be calcareous tube worms. The larger species are rather rare in aquaria, but the abundance of the larger vermetids on some Indo-Pacific reef flats is truly striking, and gives an indication of the amount of the appropriate detrital or particulate food available. Similarly well-adapted for reef aquarium life, the smaller species are sometimes prolific to the point of being nuisances. However, in most tanks, they simply remain an example of a small, but highly successful, component of reef biodiversity.
hmm i guess ill get rid of it. i dont think that slime is doing my digi any good at all.
thanks alot for the link!