Could you put these in a 120 with great filtration? Would they be healthy, or is it a lost cause? The only fish I have now is the pleco, who lived in a 10 gallon the first 2 years of his life (not with me) and I'm totally attached.he's about 5-6 inches now but obviously he could grow quite a bit. We'll be using a sump which will add some water, but not certain how much. What do you guys think?