Very good article! I always have at least one colony of someone else's suns, that I'm nursing back to health, in my nps tank. Sellers of these corals should ask any potential buyers to read articles such as yours, beforehand! Far too many new hobbyists are dumbstruck with their beauty and have no clue, whatsoever, the work required for these animals to survive, let alone thrive; especially compared to the normal photosynthetic varieties
My suns reproduced sexually on a huge scale in my old nps tank, literally close to 100 at any given time. When I swapped tanks, going from a 75 to a 115, I cut the feedings back from daily (and this was feeding, waiting for them to reopen then feeding again) to every other day (same double tap method). This reduction definitely had an effect on sexual reproduction and, while the move itself likely had some effect, I believe the new feeding regimen is primarily responsible. I'm now wrestling with the decision of whether I want to resume my old water change schedule, to regain that growth
