Reactor foam floating up

[Bent17]

What do you guys do when your carbon reactor foam floats to the top? Is it a matter of too much pump pressure? Can I leave it as it is? Is there a hack so it stops happening?

 

[Bent17]

Photos:

 

[Bent17]

Any help /tips?

 

[Lost in the Sauce]

The carbon should be sandwiched between two layers of sponge to keep it from agitating which will essentially pulverize it into dust.

Tighten up your lower sponge to your carbon. Problem solved no?

 

[Bent17]

OK I have both sponges on top so that should be the issue?