I don't even have a tank right now. Looking at getting a 30gal tank. I've had tanks before, just never had a refugium. Having one for pods would be nice. I've had a mandarin fish before, real nice to have in the tank, but have never been able to keep them alive. I had bought pods for him before, but as you all know, they disappear very quickly. I've seen people put Cheato in their refuges, I assume this is for food for the pods as well as helping filter nitrates and stuff? I never did much research before, had a roomate that has had fishtanks his whole life, I always asked him questions. Now that I'm 1200 miles away, I need to do my own research, lol.