See, although you may take excellent care of these
cavies, you've opened up their previous cage for a set of new piggies, who are probably from the mill and treated horridly. You encouraged breeding and selling of animals with your purchase. No matter how you may feel about the subject, money is money, and pet stores want it. And from you, they got it. The aquarium is simply not a decent home for a piggie. Imagine if you were kept in a glass tank. Happy? I don't think so.
Zupreem is junk food. Never feed it. Oxbow, Kleenmama, Mazuri and Sweet Meadow are seedless, high quality foods for your piggie. Also, the sticky at the top of the Diet and Nutrition forum has a chart of which veggies you may feed and how much. *Remember that high-quality, fresh hay must be provided 24/7.