Yellow goo in refugium

[marsenis]

What is this stuff?

 

[vetteguy53081]

What is this stuff?

Looks like dongecwhich favor dark low flow areas
Lift out the media basket and clean it off with toothbrush or similar scrubber and return basket to column

 

[marsenis]

Looks like dongecwhich favor dark low flow areas
Lift out the media basket and clean it off with toothbrush or similar scrubber and return basket to column

Thank you so much will do! Figured but just wanted to make sure