Help with my Dawrf Puffers and Bubble Eyed Goldfish?

first, take that poor goldfish out of that inappropriate tank. Get AT LEAST a 10 gallon! Or if you want additional fish, a 20-30, goldfish are big. It is also safer to just not feed them if you are only going for three days. Those vacation feeders will dirty their water and make them sick, especially given the bad conditions you already have your fish in.