I have literally hundreds of little white sponges in the chambers if my AIO. I know sponges are a good thing. Is there any thing I should be aware of as to why there spawning so rapidly.
I bet it's Scypha sponges,which are in about 40% of every single overflow box on the planet haha. Completely harmless filter feeders who will only spread in dark areas with lots of flow. If they have spread to the extent that yours have then they are content with the dissolved particulate level in your water.
