Help! Chaeto flowing into trigger sump baffle?

[roggy23]

See pictures. I'm sure this is an issue.
My first attempt at chaeto and its just getting stuck into teeth of overflow baffle in trigger sump. What can I do here? Should I remove any that is all along the overflow? What can I do to keep it from flowing that way?

 

[homer1475]

Cheato should stay in a somewhat ball. If it's falling apart like that it's dying.

What are your nutrient levels?