I'm still fairly new but wouldn't it be better to wait until you start to get at least diatoms before adding a cuc? And pods as well? From what I understand, pods also help as part of a cuc. You can feed the tank the phyto (sp?) stuff from algae barn but I'd think the pods would survive better once the tank had been up and going for a while. Pods are expensive! Dragon's breath is a very hardy macro.