what is growing in my sump?

[gideon2086]

I see baby snails developing in this area as well. What the heck is this stuff?

 

[vetteguy53081]

Pineapple sponges which are filter feeders and indixcator of satisfactory water quality

 

[gideon2086]

Pineapple sponges which are filter feeders and indixcator of satisfactory water quality

Thanks. All of the branching is the sponges as well?

 

[vetteguy53081]

Thanks. All of the branching is the sponges as well?

Yes. . strands of poriferan sponge. I personally scrape most away with the edge of a credit card so i can see in the sump and also prevent them from reaching the inlet of my return pump