Terminology for a not so new noob?

[axepilot]

I'm not familiar with some of the acronyms here. What is "RO", "DI", etc......

I've been out of the game for while........................

 

[OrionGirl]

RO-Reverse Osmosis
DI-Distilled (though I think sometimes it's also used for Deionized, which is different).

 

[axepilot]

Cool! Any more out there that you care to post?

 

[TAFKARojo]

FO- Fish only
FOWLR-Fish only with live rock
LR-Live rock
Ls- Live sand

those are just ones i can think of off the top of my head