150g mixed reef with an attached 40 g sump. Kessil AP700 x 2, Geo Ca reactor, occassional carbon reactor, occassional Green Killing Machine UV, and Reef octopus skimmer. System has been running for 1 yrs and prior to that I was running a 100g tank mixed reef for 15 years. 26 years of keeping reef tanks. https://bareefers.org/forum/threads/dennis-tank-journal.21850/#post-336886