Wardley is a good brand, I have no issue with it. I do not believe that it will hold back your fish from growing and being successful. If your local fish store does not carry it and you want to try New Life Spectrum, Hikari, etc I would order some online and see how your fish take to it. NLS (New Life Spectrum) has a very good reputation in the hobby and Hikari is very well established. You can order food online and pay very little in shipping. It may be worth it.