Update: thanks for all the advice! I have my 125 up and going and got rid of the 55 to my neighbor,along with the Oscar. What's funny though is that in changing out the 55 gallon, and as I'm telling my neighbor about this site, I found that small BGK that I had long ago thought became a midnight snack (which made me research and join this site,btw) came swimming out, which made me change up my processes a bit. I did cycle the tank for 3 days, and I kept the BGK in a small 1/2 gallon tank. My cycling was short because I didn't want the BGK todie from stress or lack of oxygen. So far he is ok, but now I have to rethink my stock. Since the first initial advice from the forum, I decided to go with fronts.... But I really want to keep the BGK...so does 3-4 baby Fronts and the BGK, and one Ornate Bichir sound feasible? Thanks sooo much guys!