Well said, CarmieJo. Ill second that. Get some test kits and some books and read read read. One thing I find in this hobby is that people feel that by creating their little slice of ocean in their house that they are powerful and can do whatever they want. In reality its still nature that rules here, think of the tank more like a guest in your house, you must play by certain rules and treat it well or it will leave (die).
Not to get too personal but it doesnt sound like you even know the basics here, unless you are using a lot of other filtration as supplement you are gunna want at least 1lb of LR per gallon of water. Id also make sure you have enough flow, its not just to push water around and make corals happy it is also an important part of filtration. With a puffer and a trigger you have some messy eaters and another common mistake of those new to the hobby is over feeding. If you give them meaty foods on an immature tank with insufficient flow and liverock I can see you having a big probem really fast. At this point Id really suggest you read up as much as you can possibly stand, read this forum until your eyes water, you will find many topics on books to read, Ive picked up a few and by far my favorite is "The Conscientious Marine Aquarist" if you get no other book at least get that one. I would also get some test kits as soon as humanly possible and test your ammonia, nitrite, and nitrate. Spare water for a water change wouldnt be a bad idea either. Best of luck to you sorry for the rant but I hope this helps. Im just afraid that if you continue on this path you are heading for a tank crash or at least sick, unhealthy fish. Too many people get out of this amazing hobby because they just didnt know enough about it to begin with.