I use bioballs and my nitrates are zero.. keeping an eye on it, but so far so good...  I'd say a little more rock too, and in my systems I rely on heavy skimming to keep everything tip top... 
Whaddya got for lights? 
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135G Mixed Reef. Bullet 2, 25 gal refugium, 2 X250W MH + 4X 96W PC\'s, DIY Calcium Reactor, Coralife 1/6 HP Chiller, Phosban, Tunze, 2 closed loops & SQWD\'s, Seios, Coralife 4 stage RO/DI & a bunch of other expensive gadgets... I may never retire, but I'm gonnahavahelluvanaquarium!
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