Additional LED?
 

Hey guys I'm planning to get another led fixture to my 75g center braced tank. My LPS has been growing nice and fast but my sps seems to be growing very slow for 7-8 months but color is very nice. I'm currently using the dimmable taotronics fixture exactly the same as this 1

http://www.amazon.com/gp/aw/d/B0092L...110_SY165_QL70

Should I get the same thing or should I try the full spectrum
D12

http://www.reefsupplycanada.com/d120...ight-16-light/

They are pretty much the same price so which do u guys think will be better? Or is light not the problem and just stick to my one fixture? I do get pretty good light spread "I think" except there's some shade right under the brace and far right and left side of tank. Here's a FTS

http://i1292.photobucket.com/albums/...ps1fd6352c.jpg

http://i1292.photobucket.com/albums/...ps05cf9e78.jpg

You get what you pay for. Personally id get rid of both lights and buy some name brand ones. Thats just my 2 cents

Light it up ! LEDs are pretty direct there spred sucks . My LEDs light up my room. But I still can't grow any sps out of my 25x25 square .

I'm going to buy two hydras for my 48x24x20 tank :)

I think that light looks fine for growing SPS, I'd look at other things first.

What do u recommend?

I'd go for a bit more flow than those powerheads can do. Make sure temp is about 78/79, stable water parameters, not sure what you have for skimmer, but better skimming typically means better SPS growth.
Keep in mind that parmeters ideal for LPS aren't optimal for SPS.

But based on the brightness of the sand and hotspots on the upper rocks where the SPS are, I'd say you have more than enough light.

Overall though, long term stability is best for SPS

I'm planning on ordering the WP40 on Boxing Day and I have my Levites at about 60% I turned down blue so I can take better pic they normally at 70%. I'm using a euro reef 125 rs skimmer and my system is a high nutrient one. I stopped doing water test but last time I check my nitrate was 10-15ppm. I keep hearing about calcium reactors. Are they worth getting and how do they work? Do they cause tank crashes and what equipment do I need to buy to make them work?

full spectrum will give nicer color and definitely grow sps. But i reccomend 1 fixture for every 2x2 section as the d120s have lenses that focus the light so it will not spread near enough for a 4 footer. Or if you have your mind set on 1 fixture and are happy with that one you should do the same again as i wouldn't put a d120 on anything bigger then 30" (and that is with stripping the lenses off or changing them to 120 degrees).

Light looks fine, color is just a personal preference. The ER 125 is a good enough skimmer, keep it clean regularly and skimming a bit wet. Nutrients are too high IMO for great SPS growth. If your NO3 is that high, your PO4 is probably elevated as well. Get both down for better SPS growth. The WP 40 will help with flow, but might bother your LPS a bit, so you might need to get creative with placement.
You don't need a Ca reactor unless you need to supplement levels beyond what your water changes provide. You do regular good sized water changes, right??
If things aren't growing fast, Ca/alk won't deplete fast.
But you need to test regularly to determine consumption, then once it's significant, you can look at ways to replace. 2 part liquids, dosing or reactors are the most common methods.

Was planning to just add another to my tank so one on each side of center brace but prob not now that brad suggest its good enough

I'm doing 20G water changes every 1-2 weeks. I keep my KH around 7 I think. How u suggest me to improve my parameters?