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#1
07-16-2008, 05:31 AM
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Thanks,
Yea, the 250 is way too much for zoas. I needed to remove everything except the clams and SPS when I upgrade the light. There are no "near the bottom low light" places to put lower light livestock in a tank just 9 inches deep. Everywhere is very high light (even with a 150 watt fixture). An ATO is a necessity for an open top tank with MH lighting. 
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#2
07-16-2008, 05:57 AM
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this is true... to bad spot lights are hard to come by it would be cool to do 2 or 3 70W MH spot lights.
http://images.google.ca/imgres?imgur...%3Den%26sa%3DN
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#3
07-16-2008, 06:12 AM
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A lot of Japanese tanks use spot mh lights with both softies and sps to focus on the corals with higher light requirements. Cuts down on power and heat while creating a cool effect.
__________________
Sebae
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#4
07-16-2008, 03:15 PM
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I had a 70 W Viper inches over a maxima clam and it was browning out. I switched to the 250 and the colour came right back. I was really surprized a 70 W MH about 6inches over a clam wouldn't provide adequate light.
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#5
07-16-2008, 04:11 PM
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Maybe the spectral output just isn't there in the lower wattages? Interesting, I agree, you'd think it would be OK given how local the light is. I'm betting it's a quality of light issue and not a quantity of light issue.
__________________
-- Tony My next hobby will be flooding my basement while repeatedly banging my head against a brick wall and tearing up $100 bills. Whee!
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#7
07-16-2008, 08:03 PM
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150w MH track light
http://www.cokerexpo.co.uk/seditpics/metal150wtl.jpg 2 of these 2' over the tank would be pretty cool looking. would have to get better ballasts, bulbs and would have to find something like it in canada.
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