Hello, I'm almost finished plumbing my 200 gallon to its 75 gallon sump. Sump will have 2 7" sock filters, sponges in the baffles, and 1/4 to 1/3 of the sump will hold bio balls. I'll have an fx6 on the 200g as well.
For stocking I'm definitely going with 2 oscars.
For tankmates I was...