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Old 09-16-2004, 09:16 PM   #1
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Is this stuff OK?

I have some green stuff showing up on my live rock. I'm not usre if it's algae or coraline. How can I tell the difference?
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Old 09-16-2004, 11:40 PM   #2
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Need a little more info. How old is your tank? Do you use tap water or RO? Coraline is usually purple in color so you may have a case of nuisance algea. Did it come on all of the sudden? what does it look like?
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Old 09-17-2004, 06:32 AM   #3
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Green corraline will grow in very low light areas. What type of light do you have?
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Old 09-17-2004, 04:33 PM   #4
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It is a 75 FOWLR Some of the rock has alot of purple. But since the snails have been cleaning the brown algae, I'm starting to see some green. There are some small spots with dark green, but mostly a light coating of green. the tank is about 2mth old and I only keep the light on for about 3hrs. I'll try to take a picture and post it.

thanks
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Old 09-17-2004, 07:46 PM   #5
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If its hard its coralline. It can be many variant colors of purple, green, red, orange.
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Old 09-17-2004, 07:47 PM   #6
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You need to increase your lighting time. My lights are set on a timer for 12 hr/day. What type of bulbs are in the fixture
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Old 09-17-2004, 11:19 PM   #7
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Good catch Darb, I missed that blurb about lighting for only 3 hours. You need to up that to 12-14 hours for the general health of any photosynthetic organism, or even if you just want nice coralline.
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Old 09-17-2004, 11:20 PM   #8
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I guess I would be right by saying it has 2 10k bulbs and 2 blue bulbs.
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Old 09-18-2004, 07:55 AM   #9
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2 10 k and 2 actinics is good. Just increase the lighting to 12 hrs a day. It dosen't have to be any specific 12 hrs. Mine are set from 9 am to 9 pm,(when ia am home) with the actinics on 1 hr before and 1 hr after.
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Old 09-18-2004, 08:57 AM   #10
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why put the actinics on 1hr before and after.
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