Morphs are considered both a great beginner’s coral (Beginners Guide to Keeping Corals) and a rapidly growing ‘weed’ depending on who you ask. Morphs or, more accurately, corallimorphs are very tolerant of water conditions and can tolerate poorer water quality than many other corals. Morphs will rapidly spread across rockwork, resulting in many hobbyists placing them on isolated pieces of rockwork to prevent excess spreading. Most favour limited water movement and lower lighting than many reef tanks provide, however, this can be in the hobbyists favour. Should the morphs take over, they can be controlled by increasing flow and light output. Ricordeas are one exception, as they seem to benefit from more light and flow.
Morphs are capable of feeding, but in captivity many do not and get by on the products of their zooxanthellae. Not feeding ‘morphs’ is perhaps a wise idea, as well–fed corallimorphs will spread and can sting other inverts that they come into contact with. Amplexidiscus species can take large items of food that fall upon their disc and may predate on small fish!
As morphs do not form calcareous skeletons, the aquarist can be less concerned about calcium and magnesium levels in relation to these animals.
Corallimorphs are ideal for fragging and can be cut with sharp scissors or a scalpel to produce more individuals. Cutting them in quarters along the main axis and ensuring that each piece has part of the mouth remaining will result in four individuals. The cut sections need to be allowed to heel and to attach to rock rubble in a low flow area of the tank or in a dedicated frag system. The cut animals will produce a lot of toxin-rich slime so ensure your system is running activated carbon to deal with the problem.