How to Mount your Coral Frag and Plug

Depending on the type of coral and plug, there are a variety of tools and techniques for successful coral mounting. In this article, we will focus on two materials that are used for mounting coral frags onto plugs. While these materials can be used in some soft coral applications, they are especially suited for stony corals, and will be discussed in terms of such.

Glue or Epoxy, which is Best?

Two of the most commonly used materials to mount coral frags onto plugs are super glue and epoxy. Naturally, your next question may be, “Well, which one works the best?” Unfortunately, the answer is not that simple. Based on a variety of factors, one material or the other may be better suited to your specific project, or it may be up to personal preference.

Mounting a Coral with Super Glue

A favorite of many, superglue has a wide array of applications, including mounting coral frags. While there are brands of superglue that are promoted solely for the purpose at hand, most superglue found in hardware stores will do the trick. This material can be less expensive, commonly available, and easy to use.

When applying superglue to your coral frags, it is important to make sure your frag has a flat base, ensuring a large enough attachment point to the plug. A small amount of superglue on the plug and gently press and hold the coral to allow the superglue to bond at least until tacky. This typically takes only a few seconds, but holding it in place for up to a minute may provide more successful results. If possible, let the frag sit undisturbed for five minutes to let the superglue cure before handling.

Smaller, branched SPS corals with clean cut bases are great candidates for superglue use.

Mounting a Coral with Epoxy

Epoxy is a putty material that typically consists of two parts that must be mixed together. Then, it can be used to bond coral frags to plugs or rocks. There are specific epoxies made for use with corals.

First, mix the epoxy material as stated in the instructions. Mold an appropriate amount to the plug and place the coral frag and allow it to cure. If possible, place it in a location where it will be undisturbed to allow for complete hardening of the epoxy.

Larger, heavier LPS corals with irregular bases that may need more support are good candidates for epoxy use.

Tools for Coral Mounting

Whichever technique you choose, there are several tools that range from essential to useful to aid in the process. For the protection of you and your corals, wear gloves. This will prevent your skin from coming in direct contact with the coral’s nematocysts, or stinging cells.

Coral frag mounting is most easily done outside the main tank, to limit the amount of excess superglue or epoxy in the display. To that end, a spare tote and salt water is needed, as well as a container to transfer the coral frag in water between the tank and the tote. Towels, of both the paper and cloth variety, should be on hand to clean up any spilled water or materials. Most importantly, you will need your selected coral frag, and an appropriately sized plug.

Bonding material choice is important. With the correct material, tools, and techniques, you are giving your coral frags the conditions to thrive and grow.