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The dreaded Lighting Question

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Darrell

Well-known member
Joined
Jan 7, 2004
Messages
125
ok i have up graded my tank to MH from PC's.
Witch is the better bulb ,10k,20k ect and brand and were is the best prices for them
Im looking for 2- 250w bulbs any ideas would help
Darrell
 

Macbeth417

Reef Monkey
Joined
Oct 18, 2003
Messages
563
Location
Seattle, WA
Just a personal opinion, but I don't think you can go wrong with Ushio 10Ks.

-Says the man who let low price talk him into XMs...

-Erik
 

plumber_bob

Well-known member
Joined
Jan 22, 2004
Messages
207
Location
Federal Way
Remember the higher you go up in spectrum the faster the bulb goes bad. 10k ushios look a little yellow at first; however, once the bulb gets going it shows more of a whitish blue look. I also like the Aqualine Bushke 13k's, but if you have a lot of actinic in your tank this bulbs might be too blue for you.
 

G~

Super Gobie
Joined
Jul 25, 2003
Messages
133
i have played with a lot of bulbs lately. i have tried the Coralvue and the new GS-Maxim 10k's. these were all 400wers though. the Coralvues were a touch blue for my taste, but the corals coloured up nicely. the GS-Maxim has a true white light to it. great for true colour rendition of fish and non flourescing corals.

i finally went with the Coralvues, mainly because my wife liked the way it coloured up my flourescing corals. i really liked the truer colour of the maxim though.

G~
 

jazznreef

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Joined
Jun 30, 2003
Messages
219
Location
Seattle/Magnolia
to clarify, you are talking single ended right? ushio 10ks are a very nice way to go once the bulbs burn a bit and mellow on the yellow spectrum. lights are really a personal opinion and a lot of people experiment for a long time and go back and forth. the ushios are a good place to start though.
 

SueT

Well-known member
Joined
Jan 17, 2004
Messages
943
Location
Houston, Texas
Darrell, I recently switched from iwasaki's that I have used{not continously} since I got back into reefkeeping to the XM 10k's. It was a hard decision cause I have always made every decision like pulling teeth. This is the lighting study that helped push me off the fence. http://www.cnidarianreef.com/lamps.cfm

They have been on my 180g tank for 3 weeks today and I really like how they are burning in.
 

Darrell

Well-known member
Joined
Jan 7, 2004
Messages
125
Now being that this tank will have both Softies and sps's i think ill go with ushio 6500K's on one side and XM 10k's on the other. Now do you think the 10k will be effencint for sps's or have you had better luck with the 20k's
 

reedman

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Joined
Jun 30, 2003
Messages
3,255
Location
Mukilteo, WA
You'll have better growth in your SPS if you stick with the 10K rather than the 20K. The 20K bulbs are really for the aethetics. They bring out the flourecense of the corals.

My humble opinion.
 

Katchupoy

Well-known member
Joined
Jul 9, 2003
Messages
2,188
Location
Kent 98031
Heres my 20 cents...

I have Ushio 10k 175 and an AB. Ab is know for its being on the bluer side.... they said its actually 14k

10k to me is white and ab is blue but not enough to make my corals fluoresce....

my point... whenever I use my 10k , my corals tend to shrink... and when using ab they extend more.

solution.. when i use my 10k... i raise my canopy for about 6 inches higher than the ab bulb...

hope this helps
 

SueT

Well-known member
Joined
Jan 17, 2004
Messages
943
Location
Houston, Texas
In the lighting study I posted earlier, another reason I did change to the XM's was that PAR in the XM's was only second to the iwasaki's. IME, sps corals have got to have the intensity, so say a 20k won't privide enough PAR to aid the coral/frag in growth. These 10k's by XM will certainly put out the intensity.
 

mojoreef

Reef Keeper
Joined
Jul 5, 2003
Messages
7,530
Location
Sumner
Another thing to concider is that its going to look kinda goofy with a different color over each side of the tank.


Mike
 

Darrell

Well-known member
Joined
Jan 7, 2004
Messages
125
so you say i should stay with the same on both sides and let the Softies adjust to what they get i also heard that putting layers of window screening between the tank and bulbs and removeing one layer every so often they will adjust to the intensity of course while keeping them on the bottom of the tank
Darrell
 
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