Two 6080,s
It may be hard to find a down current side.
Perhaps best to sell them. I may just run one 6080 at a time, {one of each side}, on 12 hr. cycles. That way I would have a complete current change, twice/day. Should be easier on the clams that way. However if its not enough to keep all the crap in suspension and all sps happy, I will need to run both.