Bubbles from pumps in nanocube

[Capncavey]

I am having a bit of an issue with my pumps bubbling when they are both running. I have the MJ 1200 constant and the accela and hydro on wave. I can't tell exactly where bubbles are coming from but the intakes are a little blocked by wall to sump. Do I need to take the air line covers on pump off? Bubbles don't bother me that much but...

[Capncavey]

Nm the sump gets low and where the MJ is the water falls rapidly