best 250W 10000k bulb

[powdertang05]

i use XM's or ushio's both great for growth.

 

[SunnyX]

<a href=showthread.php?s=&postid=7509841#post7509841 target=_blank>Originally posted</a> by chrismhaase
So you are saying the 20k will yield slower growth than say a 10k?

Slower growth but better coloration.

As much as I like the 10K XM's I prefer a bluer light source. I have used 20K xm's on an older tank and loved the color. It will drop my PAR in half but I think it is worth it simply for the increased coloration. Plus, I really do not like to frag so maybe slowing growth down is a good thing for me.

Anyway, here is what my current lighting looks like, Nice crisp white with a hint of yellow:

 

[george1098]

thats an awsome tank
what size is it?

 

[SunnyX]

225gl Starphire(60Lx36Wx24H) Reef**Deltec AP851**Deltec KM500 Kalk Reactor**GEO Calcium Reactor**Sequence DART**TUNZE 6100 Stream**2X SEIO 1500**2X Lumenarc III** ARO PRO 250W**XM 10K SE**2x140W VHO URi Actinic**1x140W VHO Uri Daylight**

 

[george1098]

oh it is the 225 gal, for some reason it looked smaller, must be the size of the fish and choral playing tricks on me