You've altered the page to say 'free-standing oxygen'. But what is this? Oxygen doesn't 'stand'. Please don't add statements that may not make sense.
Can you explain or make a new page that you link to that explains what 'free-standing' is. I know but others may not. :-))
Call it 'free-standing'?
--Quatermass 16:36, 3 April 2008 (CDT)
Well I can't think of any other way to explain it and it is not strictly relevant to an aquarium. If this was the actual wikipedia then it would not matter but this is a term used in science that would be a science related page which talks about molecules/atoms/bonds etc and I can't see how I can do this on a fish related encyclopedia. (Adam2307 06:11, 7 April 2008 (CDT))