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Old 02-25-2009, 07:26 PM   #1
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corals not fully open

I know guys it is hard but what can be the reason most off my corals are not fully open,specially few zoas,mushrooms,xenia,colt. I have 90.gal tank.Water parameters are; salnity-1.024, amonia-0, nitrite-0, nitrate-5 ph-8.4, alkalinity-3.0, calcium-400, phosfate-0.1, using RO-DI.Can you help me,please!!!
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Old 02-25-2009, 07:30 PM   #2
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temp-78- alkalinity 3.0 mq/l
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Old 02-25-2009, 07:46 PM   #3
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Lighting??? What lighting do you have on your tank?
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Old 02-25-2009, 07:52 PM   #4
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What size it your tank? And what kind of lighting are you using?
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Old 02-25-2009, 08:23 PM   #5
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90.gal. light-current orbit -2 150 watt MH .and 4 54 watt T5
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Old 02-25-2009, 08:36 PM   #6
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Did you just add the corals? How long have you had them in the tank?
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Old 02-25-2009, 08:41 PM   #7
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i have them for 10 to 12 months
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Old 02-25-2009, 08:56 PM   #8
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Did you just recently change out your bulbs? I know sometimes when you finally change your bulbs they might close up until they adjust to the new lighting?...
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Old 02-25-2009, 09:12 PM   #9
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no.nothing new
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Old 02-25-2009, 09:21 PM   #10
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What tank said is true. Normally if going from a lower wattage or output to a higher one, you ease the tank inhabitants into the new higher output lighting by running it for say 3 hours monday 4 hours tues and wednesday 5 hours thurs 6 hours friday... That is an example I dont know if that is too quick or too slow. I guess it would depend on how much the lighting itself has changed.
I have a question for you.
Do you have powerheads and are the corals getting enough flow?
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