[PeterMorley]

Charles
Thanks for that I get the message about degreasing/blasting etc.
I'll do all that again.

The only thing is the wire used to suspend the parts end up the same, and that is obviously much newer/cleaner than the old suspension component.

I did buy a new constant current power supply so can now be sure about that side of the operation. And maths is a strong point so not too worried about calculating surface area (even in inches!).

"Set up" is as supplied by Caswell Europe - cut the 8" x 4" anode into 2 halves and placed each side of the tank.
SD416 is the degreaser they supply in Europe.
Temperature 30 centigrade (86 fahrenheit I'm told!).
Agitation by the air bubbler supplied by Caswell - it doesn't create a head in the tank.

So I'll get back to the cleaning side and try again.

Thanks
Peter