Lunker,
Sorry I kinda fell off the face of the earth ... Pictures still to follow.
Planning on using a Mag18 (since that is what I have got it cheap) ... . Still building the manifold.
Only have a RDSB running about 250-300 gallons per hour and a few powerheads.
Before that I will give you my mistakes.
The tub is on a raised floor ... so I though that there was no need for syrofoam. This was a mistake on two fronts.
First, the syrofoam would provide some vibration dampening.
Secondly, I did not take into consideration the height of the sump ... and thus the placement of the bulkhead holes. So I put the holes in the tub however due to the location of the ridge that runs along the top ... the top of the sump was higher than the bulkhead.
So the sump is now on the floor itself ... in the way. If the tub was on a 2" piece of syrofoam, this would not be a problem.
Not a castrophic error however it is a pain and caused me much grief and rethinking .... etc etc. This after is all just a temp solution until the new tank is build.
Again, pictures to follow.
Bruce
PS Please lets hear from others ... your suggestions and experience will help everyone so share your mistakes and successes.