What is this bulb?

Ok so When I purchased my 135 tank included with it were to outer orbit 36" 150 DE Metal Halide fixtures. This was a all in one unit with a sepertate 150watt ballast. Inside the fixture it also house 2 24" bulbs that gave off a nice blue hue.

I never used these lights, now I might use one for a frag tank so I pulled the unit apart so I could see what kind of bulbs I need to get. 1st bulb was simpe I ordered a 150w DE xm 15k bulb. I thought the 2 other bulbs were T5's

Here is what is stamped on the buld

philips tld-18w/18
blue

SOOO what the hell kind of bulb can I replace this with?
Much help would be appreciated I only ahve Halide knowledge...

 

googles a great thing man... use it.
now im not telling you to go and buy this, but read all the specs and see if it looks right

http://www.prismaecat.lighting.philips.com/ecat/Light/ApplicationRouter.aspx?fh_secondid=928048001805_2&fh_location=%2F%2Fprof%2Fen_GB%2Fcategories%3C{fepplg}%2Fcountries%3E{en_GB}%2Fstatus%3E{act}&fh_search=TL-D&fh_eds=%C3%9F&fh_refview=search&tab=&family=&&left_nav=gb_en&

that url ^^^ was the first thing that came up when i went in my google bar, typed in "philips tld-18w/18 blue" and wa la

http://www.google.com/search?q=philips+tld-18w%2F18+blue&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-USfficial&client=firefox-a

edit: now im not at all saying that thats the right bulb, but look around the internet a little before you post this kind of stuff

 

hay... that was your 500 th post

 

Funny guy. I live on google. I only post a question when I cannot find an answer. That link does not really provide an answer. I still don't know what type of light this is. I need to replace it with something similar that's all, not the exact brand make and model. Marinedepot, liveawuaria etc.. does not sell any marine lighting that is 18w so that's what im trying to figure out

also I found that first link in a UK version and one bulb was 297 euro

 

Am I reading that spec sheet right? Is that a T-26???? Good Lord that is huge.

 

i read that too lol that has to be a big a** bulb haha

 

LOL

is it a t6? or is it a t5 normal output?

Post a pic of the bulb.

 

Im thinking it's just a 18w bulb. Im just not sure what I can buy to replace it. Also my fixture is a 36" I just measured the buld and it's actually like 23" Im thinking about replacing it with a 36" bulb.

Im just trying to find out what my fixture can power.