9 hrs is enough light..my lite schedule is: 5am blues only
6am whites and blues both on( i have leds,marineland reef capable)
2 pm go to blues only,whites off
3-330p all off and turn on moonlights
Your hair algae loves lots of light...i had a problem with algae and found out 12 hours of light way too much.... Convict helped me set a schedule ..
very important to do weekly,not biweekly water changes....need to get phospates out and make sure to remove any loose algae you can...watch your fish for any distress caused by die off of algae(respiratory,etc)