Corals bleaching

[Izek]

Ok I got home today and one of my scoly is shrinking and bleaching and so is my J-o-l and a plate coral also

Parameters are

Alk 7.8 dkh
Cal. 420
Nitrate 5.0
Ph is kinda low 7.8

But the only thing that I have changed in the last 3 months is I added carbon and added one new fish other than that everything has been the same the rest of the other corals are just fine

added a picture you can kinda tell from the picture but it's more bleached should I take out the carbon?

I really don't know what's making them bleach


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[smartchoice]

ph? temp?

 

[Izek]

The ph is 7.9 and temp is at 76.4


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[LAreefguy]

The ph is 7.9 and temp is at 76.4


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Is it always at 76 degrees? Or is that fluctuating a lot?


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[Izek]

Usually 75-77


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[maze531]

Salinity?


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[Izek]

It's in 1.025


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[BeanMachine]

What do you use for phosphate removal?

 

[Izek]

I don't use any I just put in carbon that's about it


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[Izek]

Am thinking its the carbon


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[Scout]

I've never heard of carbon doing this before.

 

[Izek]

Yeah idk what it is that's the only thing that I have added plus the fish and it was a blenny so it can't be the fish


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[Scout]

Try a water change.

 

[BeanMachine]

It could be the carbon... just didn't think you would notice its affects 3 months later. It will polish your water and make it more clear... so your corals are getting more light than they are used to. Did you change the carbon just recently?

 

[Izek]

Yeah like two days ago


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[Izek]

I've had those corals for almost a year now so it was kinda strange that they bleached I am using a different type of carbon it's supposed to be stronger so I used half of the does recommend so I guess I'll lower the led lighting then?


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[CarlosLeFishy]

How do you check ur Salinity?

 

[Izek]

I have a refractometer


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[BeanMachine]

I would remove the carbon and move the corals to a little less light if you can, rather than change the light intensity and / or schedule.

 

[Izek]

yeah i removed the carbon and moved them all to the shade and ive noticed that ive seen more of those little starfish i know they would eat some zoas but do they also eat the scoly and other corals so i can get a harliquin shrimp later to eat them