Just found a build log to go with the Aquaero threads - not very observant me
Only thing I was going to say seems to be far too late. I was going to say that you'd be better to mount the front rad with the ports at the top because with them at the bottom it'd be a$*%@joy to bleed as you have to persuade all the air bubbles to go down to the bottom to leave. Not the end of the world but a consideration if you're ever planning to drain and refill. Worth giving it a rock and see if you can hear air at the top of that rad - it'll sound sort of echoey.
Ah I see. Bugger. Just gave it a shake and was silent so hopefully there all out.