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06/14/2014, 03:28 PM
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#1 |
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Registered Member
Join Date: Nov 2013
Posts: 68
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Metal Halide Question
Would a 250W metal halide be enough for a 75 gallon tank? I have clams, sps and LPS.
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06/14/2014, 06:11 PM
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#2 |
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Registered Member
Join Date: Jul 2008
Location: Edmonton Alberta
Posts: 4,717
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for the stuff under the bulb yes, you need 2 to cover the tank though
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----------------- Current Tanks: New 210 custom 84 x 24 x 24, 60g sump, SWC 250 extreme with bubble blaster 5000, 2 vortech mp40, 2 vortech mp10, 12 T5, Water blaster 5000, warner marine bio pellets, 60g clownfish cube, red carpet anemone with a 25g sump,SRO octopus 1000sss, 250w radium, lumenarc large. |
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06/14/2014, 06:11 PM
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#3 |
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Registered Member
Join Date: Jul 2008
Location: Edmonton Alberta
Posts: 4,717
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generally depending on the reflector, MH for every 2 feet
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----------------- Current Tanks: New 210 custom 84 x 24 x 24, 60g sump, SWC 250 extreme with bubble blaster 5000, 2 vortech mp40, 2 vortech mp10, 12 T5, Water blaster 5000, warner marine bio pellets, 60g clownfish cube, red carpet anemone with a 25g sump,SRO octopus 1000sss, 250w radium, lumenarc large. |
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06/14/2014, 06:47 PM
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#4 |
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Registered Member
 
Join Date: Aug 2005
Location: Rhode Island
Posts: 8,158
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a pair of 250's would be more than enough. 175w would even work given good reflectors./
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Jim Current Tank Info: 120g Mixed Reef and 75g Freshwater |
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06/15/2014, 12:15 AM
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#5 |
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Registered Member
Join Date: Jul 2010
Location: Phoenix, AZ
Posts: 578
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When I had my 75 I only had 2 x 150w with sps on the top half . Though I had a Monti towards the bottom because that's where it liked to be. Just my experience. 2 x 250w would be perfect. Currently I have a 250w on an m80 ballast above a 34g
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06/15/2014, 06:34 AM
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#6 |
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Registered Member
 
Join Date: Mar 2006
Location: Plano, TX
Posts: 2,517
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i think 250's will be too much. i have 4 250's over my 450g and get great color and growth on sps, lps, etc; and that goes 30" deep. for a 75g, get 2 150's. and as noted above get a good reflector.
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450g Mixed SPS/LPS Reef (MH/T5/VHO) |
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06/15/2014, 08:26 PM
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#7 |
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Registered Member
Join Date: Jul 2008
Location: Edmonton Alberta
Posts: 4,717
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250 wont be too much lol. have one over my carpet, hell we have a 400w radium over a 16 inch tank at the store and sps grow like weeds
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----------------- Current Tanks: New 210 custom 84 x 24 x 24, 60g sump, SWC 250 extreme with bubble blaster 5000, 2 vortech mp40, 2 vortech mp10, 12 T5, Water blaster 5000, warner marine bio pellets, 60g clownfish cube, red carpet anemone with a 25g sump,SRO octopus 1000sss, 250w radium, lumenarc large. |
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06/16/2014, 12:12 AM
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#8 |
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Registered Member
Join Date: Jul 2010
Location: Phoenix, AZ
Posts: 578
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I'd go to say you can be successful with either IMO. Although with a 150 i think you should choose your reflector and bulb appropriately.
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