Mrbigglesworth,
Welcome to the site. You are a brave, brave hobbyist!
The smaller the tank, the harder to keep it going, a 5g is like trying to keep a saltwater fish bowl. I would call such a tank expert only.
I say that because you sound like me. I waited until I was 40 before getting up the nerve to try a saltwater tank. I kept freshwater tanks, and just dreamed of SW since I was 16 yrs old. When I was 10 yrs old, I ordered those tiny seahorses they sell out of comic books. The seahorses died in one day, and I was afraid to ever try again.
Please...if this tiny tank fails, don't give up on the hobby you have dreamed of having for a year. Don't let it discourage you. If the tank survives, I salute you as an expert, because after 12 years experience, I doubt I could keep such a small tiny tank like that going. I hope you have it for many, many years.
We love pictures!
Snake,
Maybe the word toxin was wrong, but corals have warfare, and shoot their deadly darts at each other...a little carbon goes a long way, and keeping the more aggressive corals down current from the others will keep things peaceful.