SAE 's


I recently subscribed to the list and am able to pretty much keep up with 
the topics of converstation.  However, I have no clue as to what SAE's 
and Otos are?  I live in Tx and have had aquariums for awhile, but have 
finally gotten a plant aquarium going that isn't being eaten (it has 2 
baby angels in it).  Also, what is the mixture for the DIY CO2 injector?  
I'm not going to try it on my  current tank, but am thinking of starting 
a new one and figured on giving it a try!  

Thanks in advance.

Aggie class of '99  Gig'm