Nothing to Skim

[spoot]

Originally Posted by Aquattro

It should work there, or at least coat the inside of the tube with gunk. What size are the bubbles? It's possible the becket valve is clogged and giving you bigger bubbles.

Nope, the column is filled with fine white bubbles. They just aren't forming up for some reason.

Originally Posted by SeaHorse_Fanatic

Adjust it so the bubbles reach the top & see how it works then.

Yeah, the bubbles do reach the top. Except they just aren't really turning brown.

Would the low bio load affect it this much?

Here is a pic of the collection cup. Note the white foam at the top, it never form any darker than that. The gunk on the cup is collected from about 2 weeks.


Here is the skimmer column, full of very small bubbles: