I was thinking of just putting the efhisubtrate from the Eheim into the new wet/dry filter until there was enough time for the bio balls and LR
to culture their own bacteria. If I put the efhisubstrate above the bio balls it should help transfer bacteria with the falling water. At least that sounds good.
I may start the filter with some LR
rubble on the bottom (submerged) and some bio balls above them in the dry area. Eventully, I'll try lando's suggestion and fill the sump with LR
. I just got enough LR
rubble to get started and its "dead rock" as far as I'm concerned.