The probability of rock flower anemones spawning and giving birth to offspring in your tank hinges on various elements. Maintaining consistent water parameters, providing appropriate lighting, and ensuring the presence of both male and female anemones are factors for successful reproduction. However, the precise stimuli that prompt spawning can not completely understood. Changes in lighting intensity, temperature fluctuations, and lunar cycles may all contribute.
While you can create favorable conditions for rock flower anemone spawning, it's important to acknowledge that the outcome remains uncertain. Breeding these anemones entails a degree of unpredictability. Even with ideal circumstances, there's no guarantee of witnessing this in your aquarium. Hope this helps!