photosynthetically active radiation

Par database with tank builds, specially acropora-dominant, under LED lights Hi folks, I believe this is a REALLY cloudy topic. Most of @Dana Riddle ’s amazing articles have shown that 250-350 PAR is pretty adequate for most Acropora. On the other hand we have seen many extreme PAR (800ish)...

What Is The Right PAR For Vibrant Coral Coloration and Growth? NEW VIDEO! Reef Aquarium Lighting Guide