These coral are photosynthetic and therefore respond to UV strength and increase/reduction in lighting. One of the more important requirements for frogspawn is Placement. It is an overlooked element that contributes to the overall acclimation and sustainability of your frogspawn. Some hobbyists simply choose to, Put it where is looks best but to reduce the amount of strain on your specimen, you should ideally place it in an area of your tank similar to the area in which you found it when you purchased it or where there is moderate light.
Another consideration to account for during the placement of your coral is the amount of light it will be receiving. This decision should never be random; should never be haphazard. Although capable of doing quite well in a relatively large range of lighting levels, ideally, your Frogspawn Corals do best when provided a moderate amount of lighting, with many hobbyists finding success with an added bit, or partial, shading. Euphyllia (theyre a member of this group) do not enjoy direct high lighting. Keep in mind that the amount of lighting and the degree of water flow work hand-in-hand in sustaining healthy coral life and growth. Although technically capable of survival, frogspawn DO NOT appreciate high or even moderately high flow. They will open much bigger in gentle flow, and will be able to grow into those beautiful serene tendrils that you see swaying within your habitat. (see my pic below- this was a size of a quarter a year ago and now 6"x4")
I cannot overemphasize the incredible importance of both lighting as well as placement. Never, ever haphazardly place your corals, select your lighting, or randomly pair different specimens or species within a tank, and just hope for the best. Remember, like any coral, Frogspawn Coral requires a very specific amount of lighting, and in this case, it’s not a whole lot. Unlike many other corals, Frogspawn Corals don’t require a whole lot of lighting. They are also 100 PAR, but even levels as low as 50 PAR will work well for this beautiful species.
To ensure successful acclimation, growth, and just overall, general health, your Frogspawn Corals prefer a moderate to strong water flow within your habitat. Interestingly enough, you can control the growth .If you want to look for a more contract compacted look, a higher flow will help you to achieve that. If you want a more extended, sway appearance from your Frogspawn, a low to moderate flow.
