You either oiled it, paint it or change to stainless steel hinges. I remember vincent from Aquarium artist used to sell those, maybe you can try checking with him and see. Hope it helps
This is my AI light setting on Director. The idea is to gradually increase the light intensity from 14k, 18k to 20K . which 14K and 18K is good for growth while 20K is more blueish and nicer on the coral colors.
Found this AI LED color temperature setting online from Reef central and find it to be very useful and would like to share with everyone here .
AI Hydra Colour Temp Settings.xlsx