I found my calcium consumption skyrocketed after upgrading my lights, so you may have to adjust your dosing. First though, get a kit and be SURE of your levels... How is your alk? High alk, (13+ dKH), will precipitate Calcium causing low levels, as will Magnesium deficiency as Steve said... Read Beverly's links.... it's a wealth of info. Since I read and came to understand those I have had no problems identifying and correcting chemistry issues in my system, but I do know that increased photosynthesis is definitely going to affect calcification and therefore consumption levels as I have experienced that first hand.
As for fading I believe 14K bulbs will show colours better, while 10K will give better growth as a result of increased available lumens.
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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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