Hi all, New to the hobby (or cult?) and have been doing lots of reading about fish to tank size, number of fish, and the need for cycling the tank and establishing the system. My question is how do invertebrates and corals add to the bio load? Is there a calculator that balances, fish, invertebrates, and corals? Also, what about the rate of adding invertebrates? We (son and I) started our 55 Gal about 6 weeks ago. Tank cycled and at week 5 added one small purple fire fish (goby), 1 small yellow tang, 1 peppermint cleaner shrimp, one small conch. Three days later added two more conch. All are doing well and we just went through our first water change without hiccup. We plan to space adding new fish about 4 - 6 weeks apart. How many can we add at that point? I have read some articles that say only one fish at a time, others disagree. What about the rate and timing of invertebrates and corals? Any insight would be appreciated.