I came across this site while searching for proper octo care. Lots of good information I've found so far. I think I've learned more in 30 minutes on this site than I have after hours and hours of searching anywhere else. I would like to set up an octo system but am still in the research phase. I have been keeping saltwater FOWLR and reef tanks for about 4 years now. I finally set up a 135 gallon inwall tank a few months ago to upgrade my 75 FOWLR and have a large fish room behind that wall (WAS a spare bedroom). The total water volume of this system is slightly over 200 gallons. I have the old 75 gallon I would like to drill and tie into the current system and use for an octo tank. This would put my total water volume around 300 gallons. My question is about inking. How quickly does the ink start to affect fish and the octo and does the larger water volume make a significant difference as far as the inking goes? I know it helps for the bioload but is it enough to dilute the ink? For instance if I were at work and the octo inked, am I going to come home to a tank full of dead fish? The system is running a skimmer (I have a spare one I will be adding in addition to the current one if I decide to do this octo tank) and I can run carbon in the refugium. Any information is greatly appreciated.