165wled fixture

[yudruln8]

hi anyone with a 40 gallon long breeder have a 165w led fixture I have it about 8 or more inches off the water would like to know how much % to turn up the whites for sps frags I have the blues at 100% and the other at 40% heres my fixture 165W Full Spectrum Dimmable LED Aquarium Light Bridgelux Coral Reef Fixture | eBay

 

[phillrodrigo]

How long have you had it on the tank. I would start at 40 blues 20 or 30 whites and increase by 10% every 2 weeks

 

[yudruln8]

Ive had It a few months.how do you know when too much light Is or when theres not enough light?