Problem with my calcium reactor

[Asaf]

Hello guys.
I think that i have a problem with my calcium reactor.
I have a lot of air bubbles in the top as you can see:

http://www.interload.co.il/upload/5719562.jpg

And sometimes because of that my pump run on air and stop working.

Is that normal? If not what should i do?

The reactor model - GEO 618

Thanks alot.

 

[Bpb]

Gas needs to come down or effluent needs to come up. If that isn't the problem then you have a leak somewhere. When I set up my geo, the ph probe port leaked, which caused an afternoon of frustration until I fixed it.