hydra 52 questions please help

[KushCoralsInMiami]

Having trouble adjusting the different spectrums of light to best suit my tank corals have bleached a lil just did a waster change and all levels are notmal I have LPS and SPS corals, large clams, mushrooms, acans, favias, chalices if any one can help me with adjusting the spectrums please let me know thanks

 

[mcarroll]

You want a light meter. A free lux meter app for your smartphone will get you started!