I would look into getting rid of the mandarin. My friend got one for his 40 breeder that had about 60 lbs of two year old rock, and that tank had pods EVERYWHERE. Within 3 months you couldn't see a single pod left, and a month after that his mandarin died. I have heard that you need at least 100lbs of well aged rock to support a single mandarin. ( This bugs me seeing them in tanks with no live rock, and fake corals at PetCo.) I bought a watchman goby instead. They aren't as colorful as the mandarin, but the personality is much better I think.