I was looking for some skimmer suggestions for a 120g tank with a 40g long sump. The current owner is running a Reef Octopus SUPER SRO 3000INT, so I am leaning in the direction or that or a Reef Octopus SUPER SRO 2000INT. I was wondering what other have used on a similar sized tank and how you liked it. I plan to stock it heavily with corals and fish and I will probably be running a GFO and carbon reactor.