In theory -- Yes. Again, they are harmless. I have found they the populations seem to dwindle as your tank matures and with water changes. If your tank is older... Do you use RO water? Have you tested TDS? If you have an older RO unit it might be time to change your filters.i got them also from 3 weeks now.i found that they are Scypha sponges.
i got also lot of diatoms from beginning in my tank which is 3 months old now.does it mean i got to much silicates?