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Old 11-12-2004, 10:47 PM   #1
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My LR purple coraline is melting

I do not know what has happen, but the coraline on my LR seems to be falling off the rocks my sand is purple. Can anyone tell me what has happen?
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Old 11-12-2004, 10:49 PM   #2
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Maybe just spreading?
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Old 11-12-2004, 10:49 PM   #3
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eh not to the sand
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Old 11-13-2004, 12:41 AM   #4
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The purple your seeing on the sand probably is cyano. I have some cyano that is very similar looking to purple coralline on the bottom of my QT and on the PVC tubes. Can you explain "falling off the rocks"? Are there new bare patches? Also if the "coralline" comes off the sand in sheets if you disturb it, then its cyano. HTH
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Old 11-13-2004, 12:44 AM   #5
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What is your calcium level at? Low calcium can cause coralline flaking.
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Old 11-13-2004, 09:08 AM   #6
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Yes it is in sheets. I was putting a new soft coral can that have cause it.
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Old 11-13-2004, 10:07 AM   #7
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If your sand is purple, I second the cyno suggestion. Can you post a pic so we can know for sure? What type of lighitng do you have? What are your water parameters, including PO4?
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Old 11-13-2004, 10:00 PM   #8
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I have 55/65watt lamps Sunpaq 8 tubs about 1 1/2 ft. long that cross the tank and a timmer that lights night and day and morning . I can not post a picture cause I dont no how. If it is cayno how can I get it out. I have a 72 tank my water parameters are all OK can I be feedig my fish to much, I feed them once a day but those tangs really eat alot
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Old 11-13-2004, 11:04 PM   #9
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Yes it is in sheets. I was putting a new soft coral can that have cause it
Then most likely it's cyano. I highly doubt the coral caused it. How old are the lamps in your lighting system? Old lamps promote problematic algaes, etc. Also check your source water for phosphate, cut back on feedings- just put some nori in a clip for the tangs, and try a few water changes(assuming your source water checks out ok) to start w/. Try doing a search on this site, and I'm sure someone who can provide more advice will chime in.
PS-Posting your water parameters including Ca, ALK may be be helpful.
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Old 11-14-2004, 03:14 PM   #10
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My lights are 23 months old. How can I get this cayno out of my tank?
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