Hello out there! I'm hoping someone can give me some guidance before I leave for a 3-day vacation tonight. I have a newly cycled tank. My nitrites finally went to zero yesterday. They're at zero today. Yay! My ammonia is at .1. Nitrates are at 6. I have a 29 gallon tank with 5 Giant danios. They are all doing great. Their color is much brighter and they seem happy. My last water change(20%) was 5 days ago. I've been feeding them once every 2 to 3 days. First question: should I do a water change before I leave? Second question : since I just fed them yesterday, should I feed them again today and then when I get back in three days? Or should I give them a 3-day feeding block?