So Im not completetly sure about this but from my understanding of lighting, the brighter you have your lights set at, the hotter they get and therefore the fans need to kick it into overtime to try and keep everything cool. This could potentially impact the longevity of either the led or the fan but Im not sure. What I do know is what you should be most concerned about is how much light your corals accually need. This is based off of the PAR that your light is emitting which I am not educated enough on the topic to explain to someone (but BRS is...link below). Simply speaking, PAR is how much light that penetrates through the water and is available for corals for photosythesis. Depending on the composition of your tanks livestock, you will determine how much light you accually need. Many people run more lights at lower brightness levels for better spread (at least thats my understanding of it, I could very well be wrong). Also many corals dont need that much light, in fact, running your lights at 100% could bother some corals/anenomes and lead to them not thriving. So doing your research on what your corals need is very important. Also, if you have a very common tank size, Id be willing to bet someone has already done par readings for Hydras on this forum. Hope this helps and If Im wrong about anything....oh well ;Dead
