I have a euroreef RS-135 that has been sitting here waiting for me to upgrade my tank. Thing is now I think I may want the next size up. If anyone has an RS-180
(or some comparable other brand-like octopus but not asm- or RS250, RC180, RC250--yes I know long shot 
-but it never hurts to ask 
) that is too much for their system and want to trade (either straight across
or not) shoot me a pm.