thanks for the input Pablos, think my tub will hold about 10gal , makes you wonder if you had over 100 what size they would be , I moved my fry when on the parents between 10 and 20 days into an 18" cube (20gal) so think I will move them if they survive this time about the 20 day mark , are yours discus shape thanks any pics of your set up and fry appreciated