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Old 11-14-2013, 02:59 AM   #1
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Hi guys I went away for a week and left my tank in the care of a family member. Came back a few days ago and noticed two of my corals are (I think) bleaching.

I did a water change and some upset corals still don't seem to be happy

All the tank and water stats seem ok

Nitrate -8ppm
Ph 8.7
Ammonia 0
Nitrite 0

I'm awaiting a phosphate test kit in the mail.

Any help would be great

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The coral on the far right in the flor I'm not sure if it's name and it used to be HUGE!! Not Anymore
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Old 11-14-2013, 05:31 AM   #2
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are your lights on a timer?
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Old 11-14-2013, 06:55 AM   #3
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Quote:
Originally Posted by aquandrew View Post
are your lights on a timer?
Yea they are

(Single t5 blue) on at 10am

(Twin t5 blue) on at 10:30am
(Three blue t5) on at 10:40
Three t5 and one daylight t5 on at 1130
Then the lights slowly turn of until 840pm

Is it too long? Between 6pm and 840 it's only one blue moonlight t5



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Old 11-14-2013, 06:55 AM   #4
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Old 11-14-2013, 10:03 AM   #5
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Your pH is high. Do you know your alkalinity/calcium/magnesium readings?
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Old 11-14-2013, 05:09 PM   #6
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I'm awaiting a better test kit to arrive
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Old 11-14-2013, 05:36 PM   #7
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what salt brand are you using? do you dose anything? do you use RO/DI water?
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Old 11-14-2013, 06:20 PM   #8
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Yes I'm using ro/di water but I don't dose anything. What would you recommend?
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Old 11-14-2013, 06:38 PM   #9
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How long till new test kit arrives? Do you have a GOOD lfs near you to test all your parameters and give you actual numbers rather than "your water is ok"?

Knowing what all of your parameters are is the best way to diagnose the issue and give you a solution?
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Old 11-14-2013, 06:42 PM   #10
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agreed with dav3 we need parameters before taking course of action. doing a water change won't hurt though
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