Definitely bizzaro. Mine took 2.5 weeks to fully open after purchasing. It opens up to feed about twice daily but will still respond to reef roids and is generally amazing... I'm so obsessed. I spent double on a tiny piece of this than a huge frag of meteor shower cyphastrea because the vibrant purple base and multicolored polyps. I'll update with pics when I can but low light and flow for sure. Mine had been exposed to high light before purchase I assume because it took time to fully open once I relocated it to less light. I would say the key differenceaside from polyp extension is how "bumpy" and dimpled the skin tends to look when they are doing well which contrast from the taught, firm skin they might have with closed polyps in a scenario with too much light. Mine only extends fully in actinic light, but will feed in any.