Return pump priming needed?

[Eb0la11]

Yeah it was a spring loaded check valve that required too much force than my pump could supply to open... I've replaced it with a swing type check valve that needs a whole lot less force to swing open.

I tried the closing 3 valves to my returns and it still didnt work, but thats all beside the point now since my system works well, at least the return aspect so far.

Now I am fine tuning my drain. I have to re-plumb my 'T' off to my refugium and thats where Im at now. I got the parts but gotta cut into my pipe a bit to fix it.

My next problem after that is my needle wheel pump for some reason is not starting when I plug it in. Ive tested it before and its worked everytime so this is bizarre why it wont work now. Its been a bit finicky at worst but hasnt ever plain not started so Im not sure whats wrong.

Suggestions?

[ALBERTA REEF]

Is the needle wheel pump is used for the return, usual they are used for skimmers. I still think your pump is still to small of a head height. It runs but does not have enough to get it there. A vane tip pump is better for returns. Hear is a though I have a mag 24 (2400gph) we can plum in to see.