The Marine Fish and Coral Blog about the Saltwater Aquarium Hobby

Figure 5 An example of a mature reef aquarium which exhibits very dense stony coral growth.
Photo provided by Flickr
For coral farmers and other advanced aquarists who want to experiment with fluorescence as a husbandry tool, a modular underwater magnifier can greatly assist in identifying tiny coral recruits and other fluorescing marine organisms invisible to the naked eye. In fact, the sky is really the limit when you consider that one can now purchase underwater spectrometers (a fancy name for an instrument used to collect high resolution optical data underwater) and other equipment that used to be relegated to the lab alone. For aquarists who are also divers, a full range of equipment exist to observe and photograph the true effects of fluorescence in the natural ecosystem as well.
Providing you with the highest quality chemicals for your aquarium and corals
Photo provided by Flickr
For example, you can find two articles online8/9 covering the aquariums of Mike Cao, which are stocked with a variety of azooxanthellate corals. He started with a 20 gallon aquarium, and was doing two 25% water changes a week (yes, that's 200% per month), using activated carbon, running an oversized skimmer, and using ozone in order to keep nutrient levels in check. Then he created a multiple tank system with a total volume of 155 gallons. Now he's doing 22.5% water changes weekly (90% per month), and is still using carbon, a large skimmer, and ozone. That obviously quite demanding. Of course, you may get by just fine doing something much closer to "regular" maintenance if you only have one or a few sun coral specimens in a relatively large aquarium. Regardless, the bottom line is that it's important to remember that the more food that goes in, the more time, effort, and money it's going to take to keep nutrients levels low. Providing you with the highest quality chemicals for your aquarium and corals
Photo provided by FlickrFigure 27.  is an Atlantic coral species and not likely to be seen in hobbyists' aquariums.
Photo provided by FlickrThe big Symphyllia brain coral in the center of the aquarium is more than 40cm / 16" in diameter.
Photo provided by Flickr
Aquarium coral comes in all shapes, types and sizes. A reef tank full of growing coral could be considered the pinnacle of aquarium keeping success. Some SPS corals have extreme water requirements whereas some of the LPS corals can be kept in less than perfect conditions. You'll hear some people argue that keeping corals is unethical or as harming the reef. While the aquarium trade certainly has an impact on the reefs, we feel that the knowledge and appreciation gained from keeping these animals far outweighs the very minor impacts from collection of these species for the aquarium trade.Intro
Keeping coral in a reef aquarium can be a lot of fun. Some consider keeping a saltwater reef tank full of coral the ultimate set up in the hobby. It can definitely be one of the most expensive aquarium setups and also one that requires lots of research before you buy your first piece of equipment. If you're not interested in the doing the leg work by researching these animals before you buy them you should probably reconsider what you want to get out of keeping a . Keeping corals in the home aquarium can be extremely rewarding although challenging at times. The decline of the world's reefs makes it even more important that we gets things right the first time.Water Parameters
You will need to keep the reef tank water parameters at optimal levels in order to keep corals in your aquarium. Generally speaking this means keeping the water near the following levels:Although the investment in your reef tank and corals can be significant, there is the possibility that you could recoup some of your costs by fragging and selling to other hobbyists or trading in frags at local shops for store credit. Again, captive propagation or fragging your own corals is also great for the real reefs because it places less demand on them from the aquarium hobby.According to a recent report , a brightly-colored aquarium coral has been responsible for poisoning at least 10 people in Anchorage, Alaska over the last several years. Zoanthid corals are some of the most common corals found in aquariums, but despite their beauty, some kinds can produce a chemical called a substance that can cause fever and a whole range of breathing, muscle and neurologic problems. But while the toxin is most easily transmitted through direct contact with the corals, it appears that zoanthids can also extrude palytoxin through what