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Discussion Starter #1
It's too confusing for me...I'm just lookin' for the best MH bulbs for my 75G Reef tank.

Here is my light...

48" Outer Orbit - 2x150W 10K HQI-MH, 2x130W Dual Actinic, & 6 Lunar Lights.
http://www.current-usa.com/outerorbit.html

My current coral collection consists of the following (from)...as of 11/13/06

Green Milli Acro (mtfatwork)
Bali tricolor Acro (mtfatwork)
Unknown tricolor Acro (mtfatwork)
Pavona (mtfatwork)
Pink Montipora Digitata (mtfatwork)
Orange/brown Zoanthids (mtfatwork)
Ultra purple Formosa (Graham)
Purple plating Monti with bright purple polyps (Graham)
Frogspawn (Graham)
Green plating Monti with purple polyps (Graham)
Multicolored teal Acro (Graham)
Purple tip Stag (Graham)
True blue Zoanthids (Graham)
Granulosa Acro (Graham)
Yellow Turbinaria (Graham)
Hot pink Milli (Clownnut)
Yellow Milli (Clownnut)
Oregon Blue Tort (stuckey_t)
Multi-colored Plana (stuckey_t)
Larrry Jackson Purple Monster (stuckey_t)
BamBam Zoanthids (stuckey_t)
Miami Orchid (stuckey_t)
The Blue unknown Acro (stuckey_t)
Blue Challice Echino (stuckey_t)
Grape Alien Eye Echino (stuckey_t)
Lava Flow Echino (stuckey_t)
Idaho Grape Monti (stuckey_t)
Oxypora (stuckey_t)

Red & Mint Lobo (All Reef)
Green Brain (All Reef)
Red Brain (All Reef)


My current livestock...as of 11/13/06

1 Percula Clown
2 Green Chromis
1 Orange Diamondside Goby
1 Watchman Goby
1 Pistol Shrimp
2 Peppermint Shrimp
1 Mexican Turbo Snail
4 Torchus Snails
1 Scopas Tang
1 6 Line Wrasse
6 Blue leg Hermit Crabs
6 Scarlet Reef Hermit Crabs

1 Maxima Clam
1 Dersa Clam
1 Red Neoferdina Star
1 Blue Linckia Star
1 Cleaner Shrimp

Thanks,
Dave
 

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Really with 150W HQI you don't have the luxary IMO of moving up to higher K bulbs because you loose intensity when doing so and really higher K bulb not needed with supplementation. Best to stick with 10K range.
 

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Discussion Starter #8
Really with 150W HQI you don't have the luxary IMO of moving up to higher K bulbs because you loose intensity when doing so and really higher K bulb not needed with supplementation. Best to stick with 10K range.
I kinda thought I had to stay with the same size bulb...not a problem, but what is the best bulb?

This is all Greek to me... http://www.reeflightinginfo.arvixe.com/index.htm
 

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Unfortunately its never that cut and dry. Best is purely subjective not objective.

While I generally don't put alot of stock in PAR numbers but because 150W your probably better off sticking with one the is pretty high. I don't know what ballast is actually in your unit. If not electronic it's probably a M81 ( but will probably have to open up the ballast case and see what's in it). I personally have had pretty good experience with the AB 10K with 150W HQI and did a pretty good job with most corals but at that wattage I haven't played around with many different bulbs to give an answer based on experience.
 
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