I have had watercooling for about 4 months now, no problems. Yesterday I added a alphacool 7800 GPU block to my setup, now I have this:

Laing D5 Pump
Danger Den 5 1/2" reservoir
XSPC 120.2 Rad
TDX Dangerden Waterblock
Alphacool 7800 Waterblock.

In my reservoir I use to be able to see the water come shooting in and make bubbles and stuff. Now all it does is trickle in . When I start my pc I get a load of artifacts . Now is the pump broken or do I just need to shorten the ammount of tubing that I have in my pc. Cheers.