This is the first instance I've heard of a dimmer causing problems with the controller or pump.
Everyone thought it was possible, but it never happened.
I know I had an LED dimmer on my 40 for about 2 months and never had a problem.

Small question would it be possible to run 2 pumps on one controller?
Not on one stock controller, unless you make a modified Y connector to connect both pumps to the controller.
miranda60;
Have you contacted the shipping company or had Eric @ FS contact them.
It seems like they would be responsible since it most likely was not shipped like that.
It was damaged in shipping.
I just can't see how a Y connector from one controller to two pumps will work as the voltage will be split. Each pump will only get half of the voltage from the controller. The stock power supply is only supplying 24V so each pump is getting 12V.
Yeah i have contacted eric about it .. i had to send the pumps back to him..
i have doubts about shipping damage cos the brown sending box was intact no waterdamage at all... it was shipped by postmail.
Sorry I mis-read your post I thought you said the exterior box was damaged as well.