Thinking of rasing 1 or 2 young albinos in a smaller tank until big enough to hang with the adult thats in my 29 gal. He has been in there over 2 years and I have sand, this is probably not the best thing. If i get 2 young albinos for the 20 gal, what substrate should I use. Also just buy bottled spring or drinking water and treat it to get rid of the chemicles?