"pressure" build up in loop

[Purecreature]

Hi guys i was wondering if you could help me; i set up my first watercooling loop a week ago. and all was well until a few days ago when i noticed a small pool of water on the top of my pump where my outlet is. As far as i was aware i had bled all the air out but it seemed to have a build up of air on the return from pipe from the rad to the res. I managed to get this out and thought nothing of it; it seemed as though the pressure had build up and let a little water escape. However i came back today and the same thing has happened; there is another air build up coming from the rad and a small pool of water. Luckily the location of the leak is at the base of my pc and the PSU is raised so its not going to cause any issues....yet. I was just wondering what the cause of the issue might be if anyone knows.

 

Cheers

[AustinKZombie]

Your seal isnt air tight probably you need either a cleaner fitting or tightin the clamp.

[Leonard]

You fittings are a bit loose.