That Fish Blog – Aquarium Advice and Information
There are two species of Ricordea readily found in the aquarium hobby; the Yuma and the Florida. Both offer an 
amazing pallet of colors and vary in size. The Yuma variety is found in the Indo-Pacific region, while the Florida species is found in the Caribbean and around coastal Florida. Ricordea yuma are typically the larger variety, but tend to be more difficult to keep alive. They are also more expensive, with some prices topping $100 per polyp. The Florida species are by far hardier and can tolerate a wider range of lighting. Florida ricordea can be expensive, but typically not much more than $50 per polyp, more on the average of $20 to $30 dollars per polyp.
As far as water quality, a healthy reef system is all they require with an average of 3-5 watts per gallon of lighting. They can thrive under Power Compact, Metal Halide, and T-5 lighting. If the ricordea becomes well established and “happy” in your aquarium, they will begin to divide, leaving you with more ricordea than you originally purchased. You can also force them to divide by cutting them in half or if you are feeling lucky, in quarters. Water flow can be variable, low to moderate and more turbid. Try to avoid high, laminar flow, it can cause the ricordea to detach or just to melt away in the worst case. They make a great addition to smaller aquariums because they typically only get a few inches in diameter while having very little aggression towards other corals. Like many other corals, they will “fight” back if too close to other corals, so give them a little room to grow. Through photosynthesis, ricordea gain a majority of their food. However, they will also feed on phytoplankton and zooplankton.
The Florida ricordea found in the aquarium trade are collected throughout the Caribbean and Florida. However, new regulations in Florida that are set to begin in July may cause the price to increase. The limits on collection are going to decrease by more than 50 percent. This should force the price of each polyp to increase noticeably. The drastic increase should be offset slightly by the import of ricordea from places like Haiti.
Overall, I would highly recommend the Florida Ricordea to anyone with a healthy reef tank. The color variety and hardiness make this coral a perfect choice for most aquariums, small and large.
Once the polyp is glued to a piece of rubble, where should it be placed in the aquarium?
Depending on the type of polyp place it where it will get adequate lighting and flow. If you are placing ricordea it will be looking for good lighting and low to moderate flow, so place it in your aquarium where it will get both, probably somewhere in the middle.