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Old 05-10-2005, 10:59 PM   #11
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My friend josh is actually doing the screen thing right now. He borrowed some egg-crate from me and placed the screen on top of that and has been doing it now for a couple weeks and working well for him. HTH
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Old 05-11-2005, 12:38 AM   #12
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I did the photo acclimation procedure listed in the article section on this site

The screen idea is listed but I just used the staggered time method. I am actually doing it now for a clam I bought that had been under PC lights for a few weeks. I have the MH's on for a few hours in the morning and a few in the evening. I will increase the time a bit each week. I have 2 T5's actinics as well so the tank is not dark though.
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Old 05-11-2005, 01:06 AM   #13
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Check my Previous posts what do you think about the unit I purchased. I do not want to add supplemental lighting 300W MH I think is good for a 55 21" deep. I read and questioned companies and forums
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Old 05-11-2005, 01:12 AM   #14
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I think with 20k lighting you will need no supplimental lighting...
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Old 05-11-2005, 01:17 AM   #15
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This method seems great the screen and eggcrate for the the top I will be at Home Depot tomorrow preparing for my MH arrival. One question about this process as I do this method when I recieve my MH how long should the lights stay on? I don't want me corals to be effected since they won't have any more PC for 10hrs on.
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Old 05-11-2005, 05:26 PM   #16
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Quote:
Originally Posted by xxnonamexx
. One question about this process as I do this method when I recieve my MH how long should the lights stay on? .
The idea of the screen is to limit the intensity, so theoretically you could go w/ a regular photoperiod right off the bat(10hrs). To be safe though, I wouldn't start at 10 hours a day. Try 5-6 hours a day for a few days(2-4), see how things are reacting (look for signs of stress), and go from there. It boils down to judging just how much light is being restricted by the screen/eggcrate in comparison to what you had before. Best of luck.
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Old 05-11-2005, 05:31 PM   #17
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I purchased the screen and eggcrate today I expect my Light next week. I will cover the entire top of tank with the screen lying on the eggcrate. I will put the lights on for 5hrs for the first week. Would it be ok since my corals are used to PC for 10hrs? Thanks
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Old 05-11-2005, 05:34 PM   #18
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I will put the lights on for 5hrs for the first week. Would it be ok since my corals are used to PC for 10hrs?
My answer above may help more since I edited it...in short yes.
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Old 05-11-2005, 06:11 PM   #19
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You won't need supplementation for color, but you may consider a different combination if you want to put a clam at the bottom of a 21" deep tank with 150 hqi's.

Natural sunlight has a kelvin rating of around 6,500 K. The higher the kelvin, the bluer the light and less red. 20K is pretty blue and brings out coral and fish colors but isn't the best for growth. If you want higher growth and a better ability to keep sps, clams, anemones; then you may want to go with 10K metal halides and add your color by supplementing with VHO or PC actinics.

A third option is to split the difference and go with a 14 or 15K lamp. It won't be overly blue, but you should have better growth without having to add aditional lighting. A couple good choices would be the phoenix 14k or XM 15K.

HTH
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Old 05-11-2005, 06:25 PM   #20
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Well this unit they say is supposed to be the best and newest unit avail. Slim no need for actinics and with 20K from what I have read/asked people is supposed to be plenty for color and growth thnanks anyway.
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