Tons of Pineapple Sponges

[phyto4life]

That's what I use to take out dissolved organics I actually take sponges like the common yellow/pink ones and grow them in my small frag tank on the gravel then I place them behind my frag D.T's rock work it replaces my skimmer because I do regular 10% weekly water changes and have a small fish load

but some sponges like the ones that grow long arm's I purposely take out I'm not sure what pineapple sponges are thou never heard/seen them