I am using marine pure ceramic bricks in the sump to supplement for less rocks. Don't want to over populate this tank. I am using all led. 4x reefbrite actinics and my vertex sr360.
I'll being adding more seporax and seachem matrix bio filters in the sump. There is a pretty large post on rc about how effective these two bio media at reducing nitrite cause of the amount of surface area nitricfying bacteria can grow on these.