White Sponge in Sump?

[JustKeepReefing]

Today I was seeding my refugium with copepods/phyto and macro algae and noticed these white balls in my sump in the refugium section as well as on my UV filter sponge. For the record these were noticed prior to adding todays macroalgae; however, I have in the past directly added LFS macro (I know probably very incorrect). Please let me know if this bad/ok/what to do either way please!

 

[KJ]

Sponge don't worry about.

 

[Sisterlimonpot]

Congrats! Good filter feeder.